Baltic Sea

April 9, 2026 | |

UK Highlights Espionage Activities of Russian Submarines Near Britain

Defense Secretary Says UK Tracked Russian Subs: UK Defense Secretary John Healey revealed on April 9 that the British armed forces, in cooperation with Norway and other allied nations, had tracked three Russian submarines off the British coast for over a month. Healey said that the purpose of the operation was to gather information about underwater infrastructure, including cables and pipelines. “Our armed forces left them in no doubt that they were being monitored, that their movements were not covert, as [Russian President Vladimir] Putin planned,” Healey said.

February 2, 2026 | RADM (Ret.) Mark Montgomery, Emmerson Overell

Greenland’s Worth a Fight and Russia’s Trying to Start One

The “quickest way for Russia to penetrate our naval defenses is steaming from the Arctic to the North Atlantic.” The Greenland-Iceland-United Kingdom (GIUK) Gap is the last place allied forces “have...

January 15, 2026 | Jason Jay Smart, Ivana Stradner

Russian Orthodox Propaganda Takes Aim at Patriarch Bartholomew, Calling Him ‘Antichrist in Cassock’

In its ongoing attacks on religious organizations with the potential to erode Moscow’s sway in its former sphere of influence, Russian intelligence is now stooping to demonological name-calling.

November 17, 2025 | Kenan Arkan, Isaac A. Harris, RADM (Ret.) Mark Montgomery, Cdre. (Ret.) Peter Olive, Craig Singleton

Maritime Protection of Taiwan’s Energy Vulnerability

October 29, 2025 | |

Polish Fighter Jets Intercept Russian Spy Plane Over Baltic Sea

Plane Flew Without Flight Plan or Transponder: Polish MiG-29 fighter jets intercepted a Russian Il-20 spy plane over the Baltic Sea on October 29 and escorted it out of the area....

October 21, 2025 | Peter Doran, Dmitriy Shapiro

Saving lives in Ukraine will require Trump to play the strong cards at his disposal

President Donald Trump’s mission to stop the killing in Ukraine has hit a wall. His strategy to let both Moscow and Kyiv “claim victory” and halt the fighting is missing the agreement of one man: Vladimir...

September 19, 2025 | |

‘Unprecedented and Brazen’: Russian Fighter Jets Cross Into NATO Member Estonia’s Airspace

Russian ‘Intrusion’ Into Estonian Airspace: Three Russian MIG-31 fighter jets violated Estonian airspace on September 19 for approximately 12 minutes, the fourth incident of...

September 14, 2025 | |

‘Stop Buying Russian Oil’: Ukraine Strikes Russian Oil Refinery as Trump Puts Pressure on NATO to End Oil Purchases

Fire at Major Russian Refinery: Ukrainian military officials claimed that their drones successfully targeted the Kirishi oil refinery on September 14, one of Russia’s largest...

June 11, 2025 | Clifford D. May |

Stalin in the subway

What a statue tells us – and should tell President Trump – about Vladimir Putin

June 4, 2025 | RADM (Ret.) Mark Montgomery |

Assessing the Challenges Facing NATO

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February 27, 2025 | Jack Burnham |

US and allies must get tough on Russia, China’s deep-sea cable sabotage

Russia and China have no qualms about going low to gain an advantage over the United States — and now they’re going even lower, targeting subsea cables that carry the vast majority of our...

February 19, 2025 | Clifford D. May |

Trump can halt Russia’s war against Ukraine

Just don’t expect peace and concord

July 10, 2024 | RADM (Ret.) Mark Montgomery, Benjamin Jensen

The Neglected Domain

This series—featuring scholars from the Futures Lab, the International Security Program, and across CSIS—explores emerging challenges and opportunities that NATO is likely to confront after its 75th anniversary.

July 19, 2023 | Clifford D. May |

Renewing NATO

Peace requires deterrence which requires military might

August 23, 2022 | James Brooke |

Putin Puts Europe Into an Energy Vise So Tight That Some Countries Are Chopping Wood

In addition to nuclear blackmail, Russia is using natural gas to put Europe in a hammerlock.

July 20, 2022 | Bradley Bowman, Ryan Brobst, Jack Sullivan, John Hardie

Finland and Sweden in NATO are strategic assets, not liabilities

In the two weeks since ambassadors from all NATO member states signed the accession protocols for Finland and Sweden to join the alliance, approximately half of the member countries have now ratified the...

June 29, 2022 | James Brooke, Ivana Stradner

It’s Time for NATO to Help the Baltics

Russian hackers have launched cyberattacks against Lithuania for its enforcement of EU sanctions against Kaliningrad.

February 9, 2021 | Benjamin Weinthal |

Merkel under fire for failing to choose sides between communist China and capitalist US

‘Germans got a free pass from the Biden administration,’ says ex-intel chief Grenell

January 14, 2021 | Dr. Brenda Shaffer |

Energy

December 15, 2020 | LTG (Ret.) Ben Hodges |

Strengthening NATO in the Black Sea Region