title: EU's Tusk appealed to Rajoy to avoid escalation in Catalonia
text: BRUSSELS (Reuters) - European Council President Donald Tusk appealed to Spanish Prime Minister Mariano Rajoy on Monday to seek ways to avoid escalation in Catalonia and the use of force following Sunday s independence referendum in the region. After speaking to Rajoy, Tusk tweeted:  Sharing his constitutional arguments, I appealed for finding ways to avoid further escalation and use of force.  