After an obstacle was removed from railway tracks in the north, a suspect was arrested and released as security forces are trying to find additional suspects involved in the planning of the attack.

Former president Dmitry Medvedev, said Russia had the right to defend itself with nuclear weapons if it is pushed beyond its limits and that this is "certainly not a bluff."

Iran has decided to target Kurds across the border in Iraq as the protests spread across the Islamic Republic over the murder of Mahsa Amini.

The trial of Stewart Rhodes, the founder of the far-right Oath Keepers militia, and four others for the January 6 insurrection, will begin on Tuesday.

Iranian riot police and security forces clashed with demonstrators in dozens of cities amid continuing protests against the death of Mahsa Amini.

A seismograph on the Danish island of Bornholm, near where the leaks had occurred, twice recorded spikes representing earth tremors on Monday.

The operator of the Nord Stream 2 gas pipeline reported a sudden drop in pressure overnight on Monday, with a spokesperson suggesting there could have been a leak. 

A targeted attack on the Nord Stream pipelines would serve to demonstrate how energy is increasingly being weaponized by certain countries.