Russian President Vladimir Putin has called Donald Trump's bluff as missiles rained down on Ukraine in overnight strikes even as the U.S.'s deadline day for a ceasefire arrives.

The Kremlin has shown no sign of halting its bombardments despite the U.S. President threatening to impose economic sanctions if Moscow fails to show progress towards ending the war in Ukraine by today, August 8.

Russia hit Ukrainian civilians including pensioners and children in overnight 'terrorist strikes' in Bucha - a city that saw mass executions, torture and sexual violence from Putin’s troops at the start of the conflict.

Two women aged 56 and 60 and a schoolgirl, 16, were hurt in the Russian strikes on ordinary houses in Bucha, while wide-ranging attacks also hit Hostomel and Irpin in Kyiv region, and Shostka in Sumy region where a sports complex and private houses were struck.

Trump’s deadline for a peace process expires today, August 8, with the U.S. President threatening to target both Putin’s economy, and to impose secondary sanctions on countries buying oil from Russia.