The prime minister has been battling to pass his Rwanda bill, which has split Conservatives as it does not allow the UK to override the European Convention on Human Rights.
Rishi Sunak has said illegal migration threatens to “overwhelm” Europe and hinted a change is needed in international law in order to tackle it.
Speaking to Italian conservatives at an event in Rome, the prime minister said “enemies” could use immigration as a “weapon” by “deliberately driving people to our shores to try to destabilise our society”.