Former US presidential candidate John McCain has mocked Russia after they included him on a list of nine Americans who are banned from the country.
He said: "I guess this means my spring break in Siberia is off, my Gazprom stock is lost, and my secret bank account in Moscow is frozen.
"Nonetheless, I will never cease my efforts on behalf of the freedom, independence, and territorial integrity of Ukraine, including Crimea."
Former US presidential candidate Senator John McCain and Speaker of the House of Representatives John Boehner are among the nine Americans banned from Russia under sanctions imposed by Moscow.
Russia announced sanctions against US officials in retaliation against US visa bans and asset freezes.
White House Correspondent for CQ Roll Call Steven Dennis tweeted the full list of Americans who have been banned by Russia:
Former US presidential candidate Senator John McCain said he was "disappointed" that the UK has ruled out military intervention in Ukraine and said European countries were "ignoring the lessons of history".
Asked if it was right to avoid such sanctions, McCain he told BBC Newsnight, "Of course not. I am not astonished, to be very frank with you. Disappointed but not astonished."
The situation was "the result of five years of naive relations with Russia, not the beginning of it", he continued.
"If the Europeans decide that the economic considerations are too important to impose severe sanctions on Vladimir Putin - which you get from the statement by Angela Merkel today - then they are ignoring the lessons of history," he added, comparing Putin's actions with those of Adolf Hitler in 1938.
United States Senator John McCain has told protesters rallying for Ukraine's integration within the European Union that "Ukraine will make Europe better and Europe will make Ukraine better".
"We are here to support your just cause, the sovereign right of Ukraine to determine its own destiny freely and independently," Senator McCain said.
"The destiny you seek lies in Europe."
Former presidential candidate John McCain has said John Kerry was "unbelievably unhelpful" when the Secretary of State said that any strike on Syria would be "unbelievably small."
US Republican Senator John McCain has said he does not back the Senate panel draft resolution authorising use of force in Syria.
"There are a number of people who are unhappy," McCain told reporters on Capitol Hill.
The Senate Foreign Relations Committee draft was narrower than the request made by President Obama, and the panel, of which McCain is a member, may vote on it later today.
Senator McCain has been calling for US intervention in the civil war for many months now.
US Senator John McCain has admitted playing a game on his iPhone during a Senate hearing in which Secretary of State laid out the case for intervention in Syria.
McCain sent the following tweet after a photograph purporting to show him playing poker was widely circulated on social media.
Republican senator John McCain told BBC's Newsnight that the arrest of Mohamed Morsi had been a "coup", and US aid should be withdrawn as a result.
He said: "The law is very clear that if there is a coup that aid is cut off and we decided not to do that.
"It's a great tragedy and the United States is basically an observer."
Although President Obama has cancelled as planned joint military exercise in Egypt, he has given no indication that the US will cut its £830 million ($1.3 billion) in aid to Egypt.
Former US presidential candidate John McCain has called for some or all of the annual $1.5 billion (£1 billion) US aid package to Egypt to be withheld if a civilian government is not quickly restored in the country.
Most of the money goes to the military under an arrangement US leaders have honoured since Egypt's 1979 peace treaty with Israel.
The Republican Senator is among a group of Congressmen who believe the aid package should be adjusted because the latest military action in Egypt unseated a democratically elected president.
McCain said: "Regardless of what anyone thinks about Mohamed Morsi, he was elected by a majority of Egyptians last year.
"It is difficult for me to conclude that what happened was anything other than a coup in which the military played a decisive role.
"I do not want to suspend our critical assistance to Egypt, but I believe that is the right thing to do at this time".
Senator John McCain has told the US Senate that he does not believe President Barack Obama has made a final decision on arming Syrian rebels, "but he has made the decision that chemical weapons have been used".
He added: "I think it is obvious that they will be providing weapons. They need a no-fly zone."