They were joined by Britain and France.
He said Germany is in touch with France on the chemical attack in the town of Douma in Eastern Ghouta, which killed 78 civilians and injured hundreds of others.
"A perfectly executed strike last night".
"Could not have had a better result".
When President Donald Trump hit Syria a year ago, the targeted attack was strictly military - 59 Tomahawk missiles.
In 2003, then United States president George W. Bush announced the end of major combat operations in Iraq aboard a USA aircraft carrier returning from the Gulf - with a banner that read "Mission Accomplished" behind him - a declaration that proved premature.
In a written statement on Saturday, Chancellor Angela Merkel underlined that the joint strike by the U.S., U.K., and France specifically aimed at destroying Syria's suspected chemical weapons capabilities and deterring further use of such banned weapons. It had previously stated that Germany would not participate in a possible military strike on Syria.
The External Affairs Ministry said in its statement, "At the suggestion of German Chancellor Angela Merkel, Prime Minister Narendra Modi will be making a brief stopover in Berlin on April 20 after completing his visits to Sweden and the United Kingdom".
"We support the fact that our American, British and French allies have taken responsibility in this way as permanent members of the U.N. Security Council", Merkel said.
Who's who in the Syria conflict? But she added that the violation of global rules against chemical weapons is serious, and "the reactions will be appropriate".
"Germany will undertake, in a determined way, diplomatic efforts to support this", Merkel said.