Merkel also stressed, however, that the use of chemical weapons was always "unacceptable".
Berlin said it would consequently direct its energy towards non-violent means of preventing the use of further chemical weapons in Syria, for example by supporting the activities of the United Nations Security Council and the Organization for the Prohibition of Chemical Weapons (OPCW).
The Syrian Foreign Ministry has denied the accusation, calling rebels' claims "premeditated pretexts".
German media reported on Thursday that US and Russian security officials were holding urgent high-level talks to prevent a direct confrontation of the two countries in Syria.
Norbert Roettgen, the CDU/CSU parliamentary foreign policy spokesperson, subsequently cautioned Washington against an excessively hasty reaction on Thursday.
Nevertheless, the situation remained "dangerous" due to its complex nature and the large number of actors involved.
(This story has not been edited by Business Standard staff and is auto-generated from a syndicated feed.)