World leaders must make a new effort to ensure that Russia's terrible invasion of Ukraine fails, according to British Prime Minister Boris Johnson, the BBC reports.

In an article in the New York Times, the British prime minister said that "the people of Ukraine will be our judge." Johnson outlined a six-point plan, including rapid defense consolidation in NATO countries. However, Labor criticized the prime minister for not acting more quickly on sanctions.

Anticipating a series of meetings with international leaders, the British prime minister said, "Putin must fail and must be seen to fail in this act of aggression. It is not enough to express our support for the rules-based international order -- we must defend it against a sustained attempt to rewrite the rules by military force."

Johnson also intends to call on world leaders to make a new and concerted effort to stop Russian President Vladimir Putin, Downing Street said.

According to Johnson's six-point plan to maintain pressure on Vladimir Putin:

World leaders must mobilize an "international humanitarian coalition" for Ukraine.

They must also support Ukraine in its efforts to ensure its own self-defense.

Economic pressure on Russia must be stepped up.

The international community must resist Russia's "creeping normalisation" in Ukraine.

A diplomatic solution to the war must continue, but only with the full participation of the legitimate government of Ukraine.

There should be  "a rapid campaign to strengthen security and resilience across the Euro-Atlantic area".

The prime minister is also expected to deliver his message at meetings with Canadian Prime Minister Justin Trudeau and Dutch Prime Minister Mark Rutte in Downing Street on Monday. On Tuesday, he will receive the leaders of Central Europe: the Czech Republic, Hungary, Poland and Slovakia.

Downing Street says these countries are already experiencing a humanitarian crisis, with 1.4 million people fleeing Ukraine to neighboring countries in just 10 days.