Putin: 1968 invasion of Czechoslovakia was 'a mistake'
According to the Russian president, the Soviet Union's actions in the 1950s and 1960s 'strained relations' more than needed.
Czechia commemorates 55th anniversary of deadly Warsaw Pact invasion
President Petr Pavel, Prime Minister Petr Fiala, and other senior members of the government paid tributes to those who lost their lives in 1968.
