The U.S. Embassy in Kyiv says Moscow could launch a major attack on Ukraine, despite President Vladimir Putin's truce.

Vladimir Putin has led Russia's Victory Day commemorations with a parade in Red Square and heightened security after days of Ukrainian strikes targeting the capital. China's Xi Jinping joined Putin as he told thousands of soldiers and more than 20 international leaders that Russia remembered the lessons of World War Two.

MOSCOW (Reuters) -Ukrainian troops have made further attempts to breach the Russian border in the Kursk and Belgorod regions, the Russian Defence Ministry said on Friday as President Vladimir Putin hosted world leaders at a major military parade in Moscow.

Russia and Ukraine have both reported attacks on their forces on the first day of a 72-hour ceasefire called by President Vladimir Putin

President Vladimir Putin said in remarks published on Sunday that Russia had sufficient strength and resources to take the war in Ukraine to its logical conclusion, though he hoped that there would be no need to use nuclear weapons.

Russian President Vladimir Putin led celebrations marking 80th anniversary of the end of World War II with a parade in Moscow's Red Square of 11,000 troops, with World War II-era T-34 tanks alongside advanced weaponry.

Russia is celebrating the 80th anniversary of victory in World War II, holding a large parade in Moscow. It comes amid continued fighting in Ukraine. CBS News' Elizabeth Palmer has more.

Russian President Vladimir Putin evoked the Soviet Union's victory over Nazi Germany to rally his country round the Ukraine offensive at a grand military parade in Moscow in front of