And if it persists, the pressure will continue to mount, and its isolation will continue to deepen.

WHITEHOUSE: President Obama Signs Iran Sanctions Act

Mr. BRZEZINSKI: I think the United States is getting itself involved in a deeper and deeper conflict which it fundamentally misunderstands, and if it persists in the policies in which it has embarked, and worse, if it widens the scale of that conflict in the Middle East and in the Persian Gulf region, then I do not see how the United States will win.

NPR: The War on Terror, Five Years Later

"If however the cough persists and gets more frequent, it is advisable to visit the pharmacist for advice on stronger medicines to treat the cough, " she said.

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It has advised drivers to be extra vigilant and to delay journeys if bad weather persists.

BBC: NEWS | UK | Temperatures 'will keep falling'

Short term inflammation is necessary for us to heal after a cut or an infection, but if the inflammation persists in the long-term it can contribute towards cardiovascular disease and cancer.

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For Gazprom to succeed it needs to maintain a patina of respectability and fairness, something that will quickly become impossible if its persists in pricing its gas in such a completely arbitrary and haphazard manner.

FORBES: Why Gazprom Is In Trouble In One Chart

But if Mrs Park persists with her offer, the US could say it respects its ally's choice and will support the approach.

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