Earlier, US Secretary of Defense Ashton Carter called for a stronger involvement of the members of the international coalition against Daesh terrorists, German newspaper Deutsche Wirtschafts Nachrichten (DWN) reported, referring to Carter's interview with CNBC.
Normally, the US refers to the coalition as an example of the determination to fight against jihadists. But lately Washington has been frustrated by the insufficient efforts of Turkey to enhance its border controls as well as inaction of several Arab states, which — although members of the coalition — contribute nothing to the current coalition's activities in Syria, the newspaper wrote.
"The United States is clearly unhappy with Turkey and the coalition," DWN noted.
According to US Vice President Joe Biden, a political solution to the conflict in Syria would be better, but in case it fails, the US is prepared to resolve the crisis using military means.
"We do know it would better if we can reach a political solution but we are prepared… If that's not possible, to have a military to this operation in taking out Daesh," Biden said.
This move, if unauthorized by the official Syrian government, could constitute a clear violation of international law, DWN wrote. According to the newspaper, the whole US-led military operation has not been approved by the country's authorities and can be considered as a violation of Syria's sovereignty.
"However, the main reason for Washington’s nervousness lies more likely in Russia’s success in the Latakia region, rather than in the inaction of its allies. Russians have an effective alliance with Syria, Iran and Iraq: in particular, they have managed to return the Syrian army its power," the German newspaper concluded.