U.S. efforts to mediate peace talks between Russia and Ukraine are reaching a pivotal moment, with President Trump saying both sides need to quickly show progress or his administration will exit

Russia said Friday that a 30-day pause on Ukrainian energy site strikes has expired, a step away from peace just as Washington threatened to exit ceasefire efforts if progress was not made soon. One of the few commitments Trump had wrangled from Putin -- a temporary moratorium on striking Ukrainian energy infrastructure -- "expired" on Friday,

Talks Monday are expected to address what targets would be off-limits to attack, as well as a potential pause in attacks in the Black Sea