Fidel Castro, the Cuban leader who helped bring the Cold War to the Western Hemisphere in the 1960s and managed to also defy U.S. efforts to end Communist rule in his country for decades has passed away at the age of 90.

According to The New York Times, Castro was in declining health for several years, which quelled his efforts to try and continue some of the Communist Revolution, and he was not in rule any longer as tension between Cuba and the U.S. seemed to ease, with President Obama being the first sitting President in the U.S. to visit the country in decades earlier this year.

Castro first stepped aside in 2006 after falling ill, and began to give his power more to his younger brother, Raul, now 85. He formally resigned as president in 2008.

Following the announcement of his death, leaders from around the world have reacted to the news.

U.S. President-Elect Donald Trump took to his Twitter account to simple announce that Castro had died, and later shared condolences over the news while joking about good Cuban cigars.

Former Republican Presidential Candidates Jeb Bush, Marco Rubio and Ted Cruz also reacted on Twitter by discussing the negative legacy Castro left behind: