The latest news on Ukraine’s Zaporizhzhia nuclear power plant—under occupation by the Russian military since early March—sparks some hope, but also more anxiety.

The good: This morning, Russia requested that the United Nations Security Council hold a meeting tomorrow on the situation at the six-unit pressurized water reactor plant, according to RIA Novosti, a Russian state-owned news agency. The RIA report cited a post via the Telegram messaging app from Dmitry Polyansky, Russia’s first deputy minister at the UN. In the post, Polyansky said the meeting is scheduled for “22:00 Moscow time on August 23.”

Contradictory accusations concerning the artillery shelling of the Zaporizhzhia nuclear power plant in war-torn Ukraine continue to be made by the Ukrainians and Russians. Both sides have acknowledged several hits on the facility, including 10 artillery strikes on the plant’s administrative office and fire station on August 11. As the two countries blame each other for the attacks, independent authorities have been unable to verify the opposing claims.

Meanwhile, at a meeting of the UN Security Council, Rafael Mariano Grossi, director general of the International Atomic Energy Agency, warned that the situation was in “a serious hour, a grave hour.” UN secretary general António Guterres added that it could “lead to disaster.”