Tributes are being paid to Mikhail Gorbachev, the former Soviet leader who was credited for ending the Cold War without bloodshed.
He has died at the age of 91 following a long illness.
Taoiseach Micheál Martin says Gorbachev "truly changed the world" and was "one of the most significant political figures of the late twentieth century".
The United Nations secretary-general described him as a 'towering global leader'
While the White House says Mikhail Gorbachev dramatically reduced the potential for a third World War.
