David Cameron has visited camps in Lebanon and Jordan to meet Syrian refugees who have fled their country's civil war.
The Prime Minister has called on other EU countries to "step up to the plate" and follow Britain's lead by funding refugee camps around Syria.
Mr Cameron said there was a "direct connection" between shortfalls in aid for camps in Lebanon, Jordan and Turkey and the influx of migrants into Europe.
The Hungarian prime minister has said Europeans "could become a minority on their own continent."
Speaking on public radio, Viktor Orban, one of Europe's most outspoken critics of mass immigration, talked about the threat to "Christian values" that the current crisis poses. . "Now we talk about hundreds of thousands but next year we will talk about millions and there is no end to this," he said.
"All of a sudden we will see that we are in a minority in our own continent."
On a visit to Jordan, David Cameron says that the EU must "follow Britain's lead" and fund more refugee camps around Syria.
The prime minister has insisted the UK will not participate in plans to redistribute 160,000 refugees who have arrived in Europe.
Train traffic with Austria suspended as German authorities seek to reduce the number of asylum seekers arriving in the country.