British government officials will boycott the Winter Paralympics in Sochi over host Russia’s military action in Ukraine, Prime Minister David Cameron said Sunday.

British athletes will be allowed to compete.

Cameron said he and Foreign Secretary William Hague thought it would be “wrong” for government ministers to go to the Games, which start Friday, given the unfolding events in nearby Ukraine.

Buckingham Palace said Queen Elizabeth II’s youngest son, Prince Edward, who is patron of the British Paralympic Association, had, “on the advice of government,” canceled a planned visit to Russia to attend the Games.

A Downing Street spokesman said Cameron was “gravely concerned” about the situation in Ukraine and was to talk with President Obama on Sunday.