Former Conservative leader Iain Duncan Smith has accused the EU of trying to play 'silly games' during Brexit negotiations. It comes after the European Union's' chief negotiator Michel Barnier said checks at the Irish border will be "unavoidable" under Theresa May's current plans for the UK to leave the single market and customs union. Report by Chulanin. Like us on Facebook at http://www.facebook.com/itn and follow us on Twitter at http://twitter.com/itn