The United States has warned Americans in Kuwait that militants are preparing to launch attacks in the US-allied Gulf Arab state and has urged its citizens to be vigilant.The US embassy in Kuwait said it “has credible information that terrorist groups are developing near-term plans for attacks against unspecified targets in Kuwait”.The embassy’s message was sent by e-mail and fax to Americans in Kuwait late on Wednesday.“The embassy reminds all US citizens to exercise caution,maintain a low profile and avoid areas where Westerners are known to congregate,” it said. —Reuters