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President Donald Trump said on social media Saturday that a deal better than “a mere Ceasefire” is in the works with Vladimir Putin, hours after Trump’s high-stakes summit with the Russian leader in Alaska failed to produce an agreement to halt Russia’s invasion of Ukraine.

Fox News senior White House correspondent Peter Doocy reports on peace talks between President Donald Trump and Russian President Vladimir Putin.

Russia has said its demands from negotiations with Ukraine, which include Kyiv's troops pulling out of several regions in the east, haven't changed.

Trump spoke directly with Zelenskyy and European leaders early Saturday about the U.S. potentially joining a NATO-style security guarantee for Ukraine as part of a deal with Russia, according to two senior administration officials and three sources familiar with the discussions.

The US-made Patriot air defense system is Kyiv's best tool for intercepting Russian ballistic missiles.

The Ukrainian military said on Saturday that it had pushed Russian forces back by about 2 kilometres (1.2 miles) on part of the Sumy front in northern Ukraine. There was no immediate comment from Russia,