Thousands of Poles are expected to take to the streets of the capital Warsaw today to protest against a new law, signed by Poland's President Andrzej Duda earlier this week, which will create a new commission to investigate whether individuals succumbed to "Russian influence" between 2007 and 2022. Donald Tusk, leader of the main opposition Civic Platform party, will lead the protest following a week of heightened tension between his party and the ruling right-wing Law and Justice party. Smaller marches by opposition supporters will take place in other Polish cities, as well as in London, Brussels, Rome and Chicago....