Greenpeace Arctic Sunrise ship case
On 18 September 2013, Greenpeace activists attempted to scale the Prirazlomnaya drilling platform, as part of a protest against Arctic oil production. The following day, on 19 September 2013, Russian authorities seized the Greenpeace ship the Arctic Sunrise in international waters in the Russian Exclusive Economic Zone, arresting the crew at gunpoint, towing the ship to Murmansk, and detaining the crew of 28 activists and two freelance journalists for three months.
Source: Wikipedia — Greenpeace Arctic Sunrise ship case (CC BY-SA 4.0)