Diplomatic efforts salvaged that allowed Ukrainian grain and other commodities to reach world markets, with Russia saying Wednesday it would stick to the deal after Ukraine pledged not to use a designated Black Sea corridor to attack Russian forces.

But Russian President Vladimir Putin warned that Moscow reserves the right to withdraw again from the agreement if Kyiv breaks its word.

鈥淲e demanded assurances and guarantees from the Ukrainian side that 鈥� humanitarian corridors will not be used for military purposes,鈥� Putin told a Security Council meeting, according to Russian state news agencies.

鈥淚 have given instructions to the Ministry of Defense to resume our full participation in this work,鈥� Putin said.

The Russian leader praised Turkey鈥檚 mediation efforts to get the deal back on track as well as Turkish President Recep Tayyip Erdogan鈥檚 鈥渘eutrality in the conflict as a whole鈥� and his efforts at 鈥渆nsuring the interest of the poorest countries.鈥�

Russia suspended its participation in the grain deal over the weekend, citing allegations of a Ukrainian drone attack against its Black Sea fleet in Crimea. Ukraine did not claim responsibility for the attack, which some Ukrainian officials blamed on Russian soldiers mishandling their own weapons.

Erdogan said the renewed deal would again come on stream Wednesday, prioritizing shipments to African nations, including , Djibouti and Sudan. That鈥檚 in line with Russia鈥檚 concerns that most of the exported grain had ended up in richer nations since Moscow and Kyiv made separate agreements with Turkey and the U.N. in July.

U.N. humanitarian chief Martin Griffiths said Monday that 23% of the total cargo exported from Ukraine under the grain deal went to lower or lower-middle income countries, which also received 49% of all wheat shipments.

But Putin repeated earlier claims that 46% of the grain exported from the Ukrainian ports of Odesa, Chornomorsk and Pivdennyi was bound for European Union countries instead of needier nations.

The U.N. and Turkey brokered separate deals with Russia and Ukraine in July to ensure Africa, the Middle East and parts of Asia would receive grain and other food from the Black Sea region during Russia鈥檚 now eight-month-old war in Ukraine.

U.N. Secretary-General Antonio Guterres hailed Russia鈥檚 announcement putting the deal back on track. U.N. spokesman Stephane Dujarric said Guterres 鈥渞emains committed to removing the remaining obstacles to the exports of Russian food and fertilizer.鈥�

Ukraine and Russia are key barley, and other food to developing countries where many are already struggling with hunger. A loss of those supplies before the grain deal pushed up global food prices and helped , along with .

The July grain agreement about 15% from their peak in March, according to the U.N. After the announcement of Russia rejoining the deal, wheat futures prices erased the increases seen Monday, dropping more than 6% in Chicago.

At least a third of the grain shipped in the last three months was going to the Middle East and North Africa, while plenty of corn was sent to traditional buyer Europe, said Joseph Glauber, senior research fellow at the International Food Policy Research Institute in Washington.

He added that more wheat was going to sub-Saharan Africa and Asian markets that have become increasingly important buyers of Ukrainian grain.

Meanwhile in Ukraine, thousands of homes in the Kyiv region and elsewhere remained without power, officials said Wednesday, as Russian drone and artillery strikes continued to

Kyiv region Gov. Oleksiy Kukeba said 16,000 homes were without electricity and drones attacked energy facilities in the Cherkasy region south of the capital, prompting power outages.

Although power and water were restored to the city of Kyiv, Kuleba didn鈥檛 rule out electricity shortages lasting 鈥渨eeks鈥� if Russian forces continue to hit energy facilities there. In a Telegram post, he accused Russian forces of trying to prompt a serious humanitarian crisis.

Power outages were also reported in the southern cities of Nikopol and Chervonohryhorivka following 鈥渁 large-scale drone attack,鈥� Dnipropetrovsk Gov. Valentyn Reznichenko said.

The two cities are located across the Dniper River from the Zaporizhzhia Nuclear Power Plant, Europe鈥檚 largest nuclear facility. Russia and Ukraine have for months traded blame for shelling at and around the plant that the U.N.鈥檚 nuclear watchdog warned could cause a radiation emergency.

In a development easing such fears, Ukraine鈥檚 state nuclear company Energoatom said the Zaporizhzhia plant has been reconnected to the country鈥檚 power grid after Russian shelling forced the facility to rely on generators to cool its spent nuclear fuel.

Energoatom鈥檚 press service told the Associated Press in a written statement that some of the eight power lines serving the Russian-held plant have been restored, but wouldn鈥檛 specify the number citing fears of renewed Russian shelling.

With its six reactors inoperative, the plant relies on outside electricity to cool its spent fuel. Although Putin signed a decree transferring the plant to Russian ownership, Ukrainian staff continues to run it.

Energoatom has repeatedly called for the withdrawal of Russian from the plant and for the creation of a demilitarized zone around it.

The company also said Russian soldiers have cordoned off the plant鈥檚 spent nuclear fuel storage facility and began unspecified construction there. It alleged that inspectors from the U.N. nuclear watchdog, the International Atomic Energy Agency, who have been present at the site since early September have been barred from the area.

鈥淭he Russians are building incomprehensible things at the nuclear fuel storage facility. They don鈥檛 let anyone in, they don鈥檛 report anything,鈥� the company said.

On a visit to Kyiv Wednesday, Spain鈥檚 Foreign Minister Jos茅 Albares pledged a new military aid package to help Ukraine鈥檚 air defenses. Speaking after talks with Kuleba, Albares didn鈥檛 disclose specifics about the arms or when they鈥檒l be delivered, citing security concerns.

Continued Russian shelling in southern and eastern Ukraine caused at least four civilian deaths and wounded 17 others between Tuesday and Wednesday, according to the office of Ukrainian President Volodymyr Zelenskyy.

The shelling also pounded cities and villages retaken by Ukraine last month in the northeastern Kharkiv region, wounding seven people.

Russian fire damaged a hospital and apartment buildings in the Donetsk region city of Toretsk. Donetsk Gov. Pavlo Kyrylenko said Wednesday Ukrainian and Russian forces continued to fight for control of the cities of Avdiivka and Bakhmut, both key targets of a Russian offensive in the region.

In southern Ukraine, Russian-installed authorities in the occupied Kherson region relocated civilians some 90 kilometers (56 miles) further into Russian-held territory in anticipation of a major Ukrainian counterattack to recapture the provincial capital of the same name. Russian forces dug trenches to prepare for the expected ground assault.

The Kherson region鈥檚 Kremlin-appointed officials on Tuesday expanded an evacuation area to people living within 15 kilometers (9 miles) of the Dnieper River. They said 70,000 residents would be relocated this week, doubling the number moved earlier.

鈥擜ndrew Meldrum And Suzan Fraser, The Associated Press