Ukrainian President Volodymyr Zelensky said that Russian strikes targeted both military and civilian objectives.

Zelensky added in a televised speech that Russia resumed missile strikes at 4 a.m. local time on Friday, but its forces were prevented from advancing in most directions.

The Ukrainian president pointed out that the sanctions imposed on Russia are insufficient and have not convinced Moscow, noting that the world continues to watch what is happening in his country from afar.

Earlier on Friday, Ukrainian President Volodymyr Zelensky pledged to stay in Kyiv, where his forces are fighting the Russian invaders advancing toward the capital in the largest attack on a European country since World War II.

Later, the Ukrainian Deputy Defense Minister said: Russian forces lost 10 fighter jets, 7 helicopters, and more than 500 military vehicles.

Axios also reported that Ukrainian President Zelensky told European Union leaders on a call yesterday, "This might be the last time you see me alive."

Russia launched its invasion by land, air, and sea yesterday, Thursday, after President Vladimir Putin declared war.

Approximately 100,000 people fled while explosions and gunfire shook major cities, and reports emerged of dozens killed.

American and Ukrainian officials say that Russia aims to seize Kyiv and overthrow the government.

Russia took control yesterday of the former Chernobyl nuclear power plant north of Kyiv, along the shortest route to the capital from Belarus, where Moscow deployed forces.

Ukraine is a democratic country with a population of 44 million, and it is the largest country in Europe by area after Russia.

It voted for independence after the fall of the Soviet Union and recently intensified efforts to join NATO and the European Union, aspirations that anger Moscow.

The United States, Britain, Japan, Canada, Australia, and the European Union revealed further sanctions on Russia aimed at excluding Russian banks, government, and elite from the global financial system.

Russia had been subjected to sanctions this week, including a German move to halt the Nord Stream 2 gas pipeline from Russia costing $11 billion.

The European Union's foreign policy official Josep Borrell described the Union's measures as “the harshest set of sanctions we have ever implemented.”

China came under pressure for refusing to describe the Russian attack as an invasion.

US President Joe Biden, speaking to reporters at the White House, said, “Any country that tolerates Russia’s blatant aggression against Ukraine will be stained (with its blood).” He declined to comment directly on China’s position.

Russia is one of the world’s largest energy producers, and both Russia and Ukraine are among the largest grain exporters.

The war and sanctions will harm economies worldwide at a time when they are already facing a crisis exiting the coronavirus pandemic.