Brinksmanship on both sides as Greece's Syriza government continues negotiations with the EU in June 2015. Syriza's Tsipras attends the St. Petersburg Economic Forum as the IMF's Lagarde calls for restoring dialogue "with some adults in the room." The German media describes Greece's finance minister Yannis Varoufakis as "amateurish." Germany says a Greek exit from the eurozone is an option. Creditors are pushing for changes to the pension system before releasing $7 billion, including $1.6 billion owed to the IMF on June 30, 2015.