"I proceed from the fact that EU sanctions against Russia will now be extended… This is already a signal", Maas told the Deutschlandfunk radio station, commenting on the existing EU sanctions against Moscow.
Speaking about the situation around the Azov Sea, the German minister said that all sides should contribute to de-escalating the situation.
"Germany is doing so. Together with our French partners, we are holding talks with Russia and Ukraine", Maas noted.
The minister recalled that Germany was in favour of the release of Ukrainian sailors and free passage through the Kerch Strait in the long-term perspective.
"We talk about that. Negotiations are still beneficial, and I would not like to burden them with the decision to introduce new additional sanctions. Once we have to draw a line under them and look at the development of events", he added.
On Wednesday, German Chancellor Angela Merkel said in the parliament Germany would support the extension of sanctions against Russia at the EU summit. During the summit, slated for December 13-14, EU leaders plan to adopt a statement on the situation around the Azov Sea.
Following the incident, Ukrainian President Petro Poroshenko signed a decree declaring martial law in several Ukrainian regions located near the Russian border and the coasts of the Black Sea and the Sea of Azov, which will be in place for 30 days.
Russian President Vladimir Putin has said that the incident was a provocation prepared in advance as a pretext to introduce martial law in Ukraine ahead of the country’s presidential election. The martial law would affect the campaign, set to start in late December, amid Poroshenko's low approval rating, Putin said.