What are the issues in US talks with Ukraine and Russia?

Ukraine with Washington eyeing a separate Black Sea maritime ceasefire deal before securing a wider agreement.
The talks, which followed U.S. negotiations with Ukraine in Saudi Arabia on Sunday, come as U.S. President Donald Trump intensifies his drive to end the three-year-old conflict after he last week spoke to both Ukrainian President Volodymyr Zelenskiy and Russian President Vladimir Putin. Here are some of the issues that Russia, the U.S. and Ukraine are discussing:

ENDING ATTACKS ON ENERGY INFRASTRUCTURE

Putin and Trump agreed last week «that the movement to peace will begin» with a 30-day pause in attacks on Russian and Ukrainian energy facilities, according to the White House.

That narrowly defined ceasefire was quickly cast into doubt, however, with Moscow saying Ukraine hit an oil depot in southern Russia while Kyiv said Russia had struck hospitals and homes, and knocked out power to some railways.

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Zelenskiy said Kyiv would draw up a list of facilities that could be subject to the partial ceasefire. That list could include not only energy, but also rail and port infrastructure, he said. A moratorium on energy infrastructure strikes could favour Moscow more than Kyiv, given it would prevent Ukraine from conducting long-range strikes on Russian oil facilities, a key way that it has inflicted pain on its enemy.

NUCLEAR POWER PLANTS

A U.S. statement said Trump had suggested in his call with Zelenskiy that the U.S. could help run, and possibly own, Ukraine's nuclear power plants and energy infrastructure.

Zelenskiy said he and Trump discussed the Russian-occupied Zaporizhzhia facility in Ukraine, Europe's largest nuclear plant. Russia and Ukraine have accused each other of risking an