Explosions heard in Kyiv as Russia presses Ukraine assault

Explosions were heard in the Ukrainian capital of Kyiv early Friday as Russian forces pressed on with a full-scale invasion that resulted in the deaths of more than 100 Ukrainians in the first full day of fighting and could eventually rewrite the global post-Cold War security order.

After using airstrikes on cities and military bases, Russian military units moved swiftly to take on Ukraine's seat of government and its largest city in what U.S. officials suspect is a brazen attempt by Russian President Vladimir Putin to dismantle the government and replace it with his own regime.

Ukrainian leaders pleaded for help as civilians piled into trains and cars to flee, and hotels in Kyiv were being evacuated amid early indications of an assault.

Ukrainian forces braced for more attacks after enduring for hours a Russian barrage of land- and sea-based missiles, an assault that one senior U.S. defence official described as the first salvo in a likely multi-phase invasion aimed at seizing key population centers and "decapitating" Ukraine's government. Already, Ukraine officials said they had lost control of the decommissioned Chernobyl nuclear power plant, scene of the world's worst nuclear disaster.

In unleashing the largest ground war in Europe since the Second World War, Putin ignored global condemnation and cascading new sanctions. With a chilling reference to his country's nuclear arsenal, he threatened any country trying to interfere with "consequences you have never seen," as a once-hoped for diplomatic resolution now appeared impossible.