Earlier this month, Donald Tusk launched a blistering Twitter attack on the Polish government, which has been led by the right-wing Law and Justice (PiS) party since it won the autumn 2015 parliamentary election. In doing so, the European Council President fueled speculation that he is planning a return to Polish politics when his term ends in November 2019, and possibly even sooner. Tusk was co-founder and one time leader of the centrist Civic Platform (PO), Poland’s main governing party between 2007-15 and currently the largest opposition grouping, and served as the country’s prime minister until November 2014.

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