But "we have to keep the door open and see how this goes, " the California Democrat added.
So when countries are ready for these various stages, NATO ought to keep the door open for them.
That could keep the door open for a bigger, more slowly moving asteroid.
And then, there is the prospect that such a meeting could end inconclusively but keep the door open for further talks sometime in late-2010 or early 2011.
Jenson Button wants to sign a one-year contract with McLaren for 2012 rather than a long-term deal so he can keep the door open to a potential Ferrari drive in 2013.
BBC: A photograph of the main grandstand at the Indian GP circuit
His warning "never, ever trust Labour with our economy again" will disappoint those in his party who are keen to keep the door open to the possibility of a coalition with Labour in the future.
Meanwhile, it will continue to offer the single-band Defy XT to those in waves F and beyond, but alternatively, it'll also keep the door open for its invitees to come aboard once the dual-band version is available -- it certainly seems wise to hold out for the dual-band version if you're able.
Shen Dingli, an expert on arms control at Fudan University in Shanghai, tells the newspaper that the UN should not hold back on sanctions but says the international community, especially the US, should give security guarantees to Pyongyang and keep the door to negotiations open.
Hence, do keep an active, open mind and door, and let knowledge flow in, even if you think you are currently doing just fine.
He would only sometimes remember to hang a sign that said "Closed for technical reasons" on the bank door to keep new customers from entering, and he was once almost captured because he couldn't open a bank door that he himself had locked.
Mr. Heins said he continues to keep his options open, but says he's still focused on seeing BB10 out the door first.
Mr. Heins said he is willing to hear offers from potential partners and continues to keep his options open, but says he's still focused on seeing BB10 out the door first.
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