Russia is threatening to reject President Donald Trump's Ukraine peace plan unless "key understandings" from his Alaska summit with President Putin are upheld.

President Donald Trump's efforts to broker an end to the Russia-Ukraine war closely mirrors the tactics he used to end two years of fighting between Israel and Hamas: bold terms that favor one side, deadlines for the combatants and vague outlines for what comes next.

Turkey's defence ministry said on Thursday that a ceasefire between Ukraine and Russia must be achieved first before any discussions can take place on possible troop deployment for a potential reassurance force.

From the front-line city of Pokrovsk in eastern Donetsk, to Zaporizhzhia in the south, there is little doubt that Russia is making advances. But, battlefield monitors suggest the picture is not quite so bleak for Ukraine as Trump and Putin suggest.

U.S. Army Secretary Dan Driscoll has become a key negotiator in the Trump administration’s push to end the Russia-Ukraine war.

Lt. Col. Yurii Myronenko told Business Insider that Russia is testing new deep-strike weapons, including modified Shaheds and new models.

During Trump’s first term, Kushner led the president’s push for Arab states to normalise ties with Israel. More recently he was called on to help broker a deal between Israel and Hamas in Gaza. Now his task is to silence the guns and drones on the front lines in the Donbas. Kushner did not respond to a request for an interview for this article.

U.S. Army Secretary Dan Driscoll held talks with Russian officials in Abu Dhabi on Monday, a U.S. official told Reuters, the latest effort by President Donald Trump's administration to broker a peace agreement between Russia and Ukraine.