The Latest Breaking News from the Baltic Sea

Dozens of classic sailing vessels from 13 countries that are plying the Baltic Sea have arrived at the Finnish capital at the end of the first leg of the Tall Ships Races that began in the Lithuanian port city of Klaipeda in late June

Some 9,000 troops from 20 NATO countries are participating in military exercises in the Baltic Sea region, which has become strategically sensitive following Russia’s invasion of Ukraine

Danish King Frederik X has inaugurated the first element of a future 18-kilometer (11-mile) rail-and-road tunnel under the Baltic Sea that will link southern Denmark to northern Germany and contribute to the transport sector’s green transition

The World War II mystery of what happened to a Finnish passenger plane after it was shot down over the Baltic Sea by Soviet bombers appears to finally be solved more than eight decades later

In 2018, satellite images captured a stunning spiral of cyanobacteria blooming in the Baltic Sea. The swirling mass of microbes helped to create a massive "dead zone" the size of West Virginia that starved the surrounding water of oxygen.

Russia unveiled a bill on Tuesday that would redefine its maritime borders in the Baltic Sea, causing an outcry among Baltic and other northern European countries and fueling geopolitical tensions.

Leaders around the Baltic Sea have reacted warily to reports that Russia could revise the borders of its territorial waters in the region

Foreign minister warns of environmental catastrophe in Baltic Sea as he accuses Moscow of using unseaworthy vessels

Sweden joined NATO earlier this month, becoming to become the 32nd member of the military alliance. Around the Baltic Sea, nations are worried about what Russian President Vladimir Putin could do next after showing he was capable of invading Ukraine. Sweden has officially ended its traditional neutrality and its prime…

Sweden's accession to NATO adds a final puzzle piece to the alliance around the shores of the strategically important Baltic Sea -- but Russia still poses a threat above and below water.

Police find deliberate sabotage responsible for blasts at Nord Stream gas pipelines but no sufficient grounds for case.