According to a press report, Reuters and CNN, loud explosions were heard in the Ukrainian capital of Kyiv, Kharkiv, Mariupol and Kramatorsk.
In a speech on television, Russia's despot Vladimir Putin said, "I have made the decision of a military operation," shortly before 6 a.m. (0300 GMT).
Putin also called on Ukraine's military to "lay down its arms," saying that servicemen who do so will be able to leave the zone of combat safely.
US President Joe Biden reacted immediately and strongly condemned the Russian military attack on Ukraine.
The government in Moscow must expect severe consequences. The US President spoke of an "unprovoked and unjustified attack" on Ukraine.
"President (Vladimir) Putin has chosen a premeditated war that will result in catastrophic loss of life and human suffering."
Oil price rises above $100 a barrel
After the announcement of a Russian "military operation" in Ukraine, the price of a barrel of oil rose to more than 100 dollars (89 euros) for the first time in seven years on Thursday night. The Hong Kong stock market plunged more than 3 percent in response to Russian President Vladimir Putin's announcement. US President Joe Biden spoke of an "unprovoked and unjustified attack" on Ukraine.
US President threatens Moscow with consequences
US President Joe Biden has sharply condemned the Russian military attack on Ukraine and threatened the government in Moscow with consequences. According to AFP, the US President spoke of an "unprovoked and unjustified attack" on Ukraine on Thursday night. "President Putin has chosen a premeditated war that will result in catastrophic loss of life and human suffering."
"Russia alone is responsible for the death and destruction this attack will result in, and the United States and its allies and partners will act with unity and determination," Biden said. "The world will hold Russia accountable." Now "the whole world" is praying for the people of Ukraine.