By Vladimir Soldatkin, Tom Balmforth and Huseyin HayatseverISTANBUL (Reuters) -Russia told Ukraine at peace talks on Monday that it would only agree to end the war if Kyiv gives up big new chunks of territory and accepts limits on the size of its army,

U.S. President Donald Trump has demanded Russia and Ukraine make peace, but so far they have not and the White House has repeatedly warned the United States will "walk away" from the war if the two sides are too stubborn to reach a peace deal.

Vladimir Medinsky, the head of the Russian delegation at the talks in Istanbul, has said that Russia is offering Kyiv a temporary ceasefire on certain fronts. Source: a speech by Vladimir Medinsky broadcast by Russian propaganda media following the talks in Istanbul on Monday,

Ukraine on Sunday committed a massive, "Pearl Harbor"-like drone strike on Russia so devastating that experts are expecting a furious reaction from Russian President Vladimir Putin. "We can expect a great deal of sound and fury from Moscow,

Retired U.S. military leaders reacted on Sunday after Ukraine carried out a large-scale drone attack on Russian military aircraft deep inside the country, with one quipping that Russian President Vladimir Putin is "having a very bad day.