Shah says that despite the fact officials had anticipated acts of retaliation, the latest violence was surprising.

VOA: standard.2009.10.24

A thousand economists, from leading universities across the country sign a public appeal to congressman and president, not to pass this bill, that it would not do what they said it would do, it would not reduce unemployment, it would in fact lead to retaliation it would make it harder for Americans to sell goods to other countries.

但有数千位经济学家，来自于全国各大院校,向国会和总统公开发出呼吁，不要通过限制进口法案，法案不会奏效，法案不会减少失业，事实上会招致报复,会让美国更难,同别国做交易。

斯坦福公开课 - 经济学课程节选

The spokesman denies allegations the anti-dumping investigation is protectionist or is retaliation for a U.S.decision to impose a new tariff on Chinese tires.

VOA: standard.2009.09.14

But former CIA officer Robert Grenier says the claim may well be true because of their threats of retaliation over U.S.drone aircraft attacks against the Taliban.

VOA: standard.2010.05.05

Under questioning, spokesman Wood said the ensuing North Korean retaliation was not a failure of U.S.diplomacy, but a failure by Pyongyang to live up to its international obligations.

VOA: standard.2009.04.15

"Given the fact that the level of retaliation next year would likely increase, we have protected the market for a significant level of goods and intellectual property rights going forward."

VOA: standard.2010.04.28

"Rather than have Brazil retaliate against us, the U.S.has found a way to bribe Brazil,if you will, to not impose that retaliation in exchange for various things the U.S.says it will do."

VOA: standard.2010.04.28

Reaction was more subdued at the State Department, where Acting Spokesman Robert Wood said Monday's Security Council statement condemning the missile launch and threatening tougher sanctions spoke for itself, and that retaliation would only mean further isolation for Pyongyang.

VOA: standard.2009.04.14

Heavy mortar exchanges have since erupted in the Bakara market area of Mogadishu, A spokesman for the al Shabab terrorist group claimed the suicide attack was in retaliation for the killing of a wanted senior al-Qaida operative in the region.

VOA: standard.2009.09.17