The rest appear closer to Senator Jim DeMint of South Carolina, who recently urged his fellow party members to dig in their heels and create a Waterloo for the president.

DeMint是从南卡罗来纳州来的，他最近才发表了一通著名演讲，呼吁自己党内的同胞们要竭尽全力为奥巴马制造一起水门事件。

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So Mr Zedillo will dig his heels in?

ECONOMIST: Mexico

Should Mr Abbas dig in his heels for longer, some American intermediaries are looking at alternatives.

ECONOMIST: The Palestinian president is in a pickle

But threats may make Mr Abdelaziz dig in his heels.

ECONOMIST: Mauritania