i'm katty kay in washington and christian fraser is in brussels. by some eurpean leaders to talk up then eventually be reached.

on their way into the eu summit this evening there was an obvious attempt by some eurpean leaders toalk up the positives. they praised the sizeable work that has been done on brexit, they emphasised their confidence that a deal can eventually be reached. but standing in the way of that agreement, is the not so insignificant conundrum of what to do about the irish border. and on that single issue this entire process could collapse. the president of lithuania, dalia grybauskaite seemed to sum it up best. we don't know what they want. she said, they don't know what they want, and that's the problem. if you have a negotiator who has no strong mandate, she added, it's difficult to negotiate. course theresa may would beg to differ. she is still confident she has the best plan. i will be talking to leaders tonight about the very good progress that has been made since salzburg, both on the withdrawal agreement and our future partnership. the teams have been working very hard in order to ensure we can address those issues. what we have seen is we have resolved most issues in the withdrawal ag