EU reform: Will Poland back Cameron's plans?
At a key summit in Brussels this week, David Cameron is expected to lay out his demands for EU reform to the other 27 leaders.
The meeting is likely to set the tone for negotiations until the in/out referendum in Britain, promised before the end of 2017.
The prime minister will need to persuade all his European counterparts of the need for change.
Our Europe editor Katya Adler has travelled across Europe to ask how his demands are likely to be received. She sent this from Warsaw.