borders

But this changed after the Biden administration updated its rules, allowing comparable Atacms missiles to be used outside of Ukraine's borders.

The war-torn country was previously restricted to using the long-range missiles within its own borders.

It opened its borders to people fleeing the war in Syria in 2011; now there are upwards of 3 million Syrian refugees in Turkey, according to the UN.

What they talk about instead is a much more modest ambition of making it harder to cross borders without the right paperwork, reducing the number who do so and disrupting the people smugglers.

Smuggling gangs often use hawala - a payment method that avoids formal banking and instead relies on a network of agents to deliver cash across borders.