Completing Brexit in two years will take a 'little miracle' - Katainen

European Commission Vice-President Jyrki Katainen holds a news conference on Commission's proposal for a new methodology for anti-dumping investigations, at the EU Commission headquarters in Brussels, Belgium November 9, 2016. REUTERS/Yves Herman

BERLIN (Reuters) - It will require "a little miracle" for Britain and the European Union to complete negotiations on Britain's exit from the bloc in the two-year time frame allotted, EU Commission Vice President Jyrki Katainen said on Monday.

Katainen told Reuters that European Commission officials were bracing for "extremely difficult" negotiations with Britain, but were trying to be pragmatic about the process.