G7

In a statement, the G7 group also said that Russia must stop blocking food from leaving Ukraine's ports.

Addressing the summit via video link, Ukraine's president appealed for more heavy weapons from Western allies.

G7 leaders are under pressure to be united in their approach against increasing Russian aggression.

"We will continue to provide financial, humanitarian, military and diplomatic support and stand with Ukraine for as long as it takes," they said in a strongly worded statement on Monday.

In a joint statement at the end of a three-day summit, leaders of the G7 countries urged China to "respect human rights and fundamental freedoms".

Issues highlighted included abuses against the Uyghur Muslim minority group and the crackdown on Hong Kong pro-democracy activists.

China's embassy in the UK accused the G7 of "baseless accusations".

"Stop slandering China, stop interfering in China's internal affairs, and stop harming China's interests," a spokesman said on Monday.

Foreign ministers will focus on how to pressure Russia to distance itself from Syrian President Bashar al-Assad.

Allies will also be seeking clarity from the US on its Syria policy, after some apparently mixed messages.

US Secretary of State Rex Tillerson strongly criticised Russia on Sunday.

He said that it had failed to prevent Syria from carrying out a chemical attack on the rebel-held town of Khan Sheikhoun last Wednesday which left 89 people dead.

A meeting of G7 foreign ministers rejected a British plan to impose targeted sanctions on military personnel in Russia and Syria who had been "contaminated by the appalling actions of the Assad regime."

Britain had hoped to strengthen the hand of US Secretary of State Rex Tillerson ahead of his talks with Russian Foreign Minister Sergey Lavrov in Moscow.

In their final statement, the group warned that a UK exit from the EU would reverse the trend of increased global trade, investment and jobs.

The meeting brings together the world's leading seven industrialised nations.

The final communiqué set global growth as a priority for dealing with threats to the world's economy and security.

But the warning about the economic consequences of the UK leaving the European Union comes as Britain prepares for a referendum on 23 June.