German Foreign Minister Johann Wadephul said Berlin would offer a measured response to last month's discovery of an explosives-laden drone near a Ukrainian cargo plane at Leipzig airport.
The German government has not officially said who it believes was behind the August 4 incident, although there has been widespread speculation that Moscow was responsible. Russia's embassy in Berlin has denied involvement.
Chancellor Friedrich Merz has said an investigation into the incident was nearing completion and vowed to provide a clear-cut response in coordination with NATO and EU allies.
News outlets Welt and Politico reported on the weekend that the German government was preparing to announce that Russian intelligence was behind the attempted drone attack.
German media have reported on Tuesday that the federal government would issue an announcement later Tuesday.
When asked to comment, Foreign Minister Wadephul said Germany would not overreact and that its response would be "firm."
"Germany must position itself in such a way that anyone who attacks us knows we will respond. And we are now preparing that response carefully," he told journalists at a press conference in Algiers.
"Germany will not be intimidated in any way, and that will continue to be the fundamental stance of our policy," Wadephul said. "Russia must know that Germany is a stabilizing force in Europe, one that is always prepared to negotiate, but which will not be intimidated."
German Foreign Minister Johann Wadephul says gas from Algeria could help replenish Germany's gas storage facilities in the future.
"Diversification is absolutely the order of the day," the top diplomat told reporters in Algiers on the second day of his trip to North Africa.
Wadephul described Algeria as a "reliable partner" that was already supplying gas to EU countries Italy and Spain.
"Both in terms of securing critical raw materials and in matters of energy security, we need reliable partners and resilient supply chains, particularly in our immediate neighbourhood," the minister said.
Wadephul added that Algeria's potential as a future supplier of green hydrogen would only make the partnership more important.
Wadephul's visit comes at a time when the effective closure of the Strait of Hormuz in the Middle East is heaping pressure on energy supplies.
"It is quite clear that we must diversify. We need multiple sources of supply," Wadephul said.
Additionally, Germany's gas storage facilities are currently only about 50% full, with the government-mandated target of 70% by November seen as impossible to reach. Storage facilities were 67% full at the same time last year. But despite the low levels, the government has said there is no danger of a gas shortage.
Wadephul met with Algerian Energy Minister Mohamed Arkab on Tuesday, where his focus was "trying to negotiate long-term contracts for Germany."
"If that is possible, then we will have another reliable source here, which is of course also important for our gas storage facilities," Wadephul said.
The foreign minister is traveling with an economic delegation and was also expected to meet representatives from German companies. He was also due to meet with Algerian President Abdelmadjid Tebboune.
On Monday, Wadephul was in Tunisia where he met Head of State Kais Saied and his counterpart, Mohammed Ali Nafti.
