Turkey accuses Syria of shooting at second military aircraft His Dutch counterpart, Uri Rosenthal, added: "We don't go for any interventions." Turkey responded with fury to the loss of its fighter, accusing Syria of shooting it down in international waters without warning. It threatened a robust response and its strong language was echoed by Britain and the United States. Hillary Clinton, the US secretary of state, pledged to hold Syria to account, while William Hague, the Foreign Secretary, said that Damascus would not be allowed to act with impunity. But the more placatory tone that emerged from the EU meeting in Luxembourg suggested that Nato would only offer Turkey political support when the alliance's governing body convenes in Brussels on Tuesday. Turkish officials - speaking before the second shooting incident - said they were looking for their fellow Nato allies to step up pressure on Syria but said they were "not talking about war." Syria insists the plane was shot down inside its airspace. "What happened is a gross violation of Syrian sovereignty," said Jihad al-Makdissi, the Syrian foreign ministry's spokesman. Syrian officials did not immediately comment on Turkey's latest accusation, which could complicate efforts to resolve the crisis peacefully. The EU announced a 16th round of sanctions against the Assad regime and Mr Hague said more measures could be taken if the situation in Syria continues to deteriorate.