The Polish President has said he will ratify the Lisbon Treaty if Ireland also ratifies it.

Lech Kaczynski said he will only sign the EU's treaty if Ireland approves it in a new referendum.

He said if Ireland makes another decision, but not under pressure, and without changing its Constitution, then Poland will not place a block on the treaty.

He said he would not block the Treaty then, because the Polish parliament has already approved the treaty.

On Tuesday, the conservative president, who is considered a Eurosceptic, said ratifying the treaty after Ireland's rejection of it would be 'pointless'.