There has come a new commitment

Our correspondent says in contrast, China, a close ally of Khartoum, sees the conference as an opportunity to turn attention on those rebel groups that have not signed up to a peace agreement.

Ms Rice will be joined at the summit by French Foreign Minister Bernard Kouchner - a recent appointee by new president Nicolas Sarkozy.

For the last four years Gallic interest in Darfur has largely been limited to watching from an air base in neighbouring Chad, says the BBC's Jonah Fisher in Paris.

But with a new leader and Socialist foreign minister, there has come a new commitment to get involved, he says.

At a joint news conference on Sunday, Ms Rice and Mr Kouchner said there was a need for decisive action.

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I think the penultimate sentence of the above is flawed.

Is it correct to say ... there has come a new commitment to get involved ?

For me the  words  'there has come a new commitment to get involved '  make no sense.

It will be correct to say .... there is a new commitment to get involved.

1.But with a new leader and Socialist foreign minister, there is a new commitment to get involved, he says.

The sentence in question  is:

2.But with a new leader and Socialist foreign minister, there has come a new commitment to get involved, he says.

Does the meaning of the second sentence is equals to the meaning of my first sentence?

I can't understand the meaning of the sentence in question. I mean I haven't learn to write sentences in this way.

You can say there has been a commitment for doing something.