Belarusian media reports that Maria Moroz, who heads the election campaign of Tikhanovskaya, has been detained.
Svetlana Tikhanovskaya is posing a genuine challenge to Alexander Lukashenko's rule, ahead of an apparent push from Russia to incorporate Belarus.
President Alexander Lukashenko claims the arrested men were going to destabilize next week's ballot, in which he faces a popular opposition candidate.
Belarus says it arrested 33 Russian mercenaries who were sent to "destabilize" the country ahead of elections in which President Alexander Lukashenko is being challenged.
Belarusian President Alexander Lukashenko has been in power since 1994, but has accused Russia of trying to undermine him ahead of elections in August.
Belarus will continue to hold its annual military parade this week, despite experiencing one of the worst coronavirus outbreaks in Europe.
The remains of 1,000 victims of the World War II genocide were uncovered this winter as construction began on high-end apartments in Belarus.
Russia's appetite for Belarus is dictated by foreign policy considerations rather than domestic ones, but either way, Lukashenko might prove a tough nut to crack.
The escort was deported from Thailand on January 17 and detained in Moscow on her way home.
This is the first time Belarus has joined Russia and Serbia for their annual military drills, which will feature some of Moscow's new military equipment.
NATO "has intensified operative and combat training activities, including nuclear weapons use procedures," Russian Defense Minister Sergey Shoigu said.
Despite being billed as a counterterrorism drill, Russia and Belarus's Zapad showed us what the Kremlin fears war with the West could look like, experts say.
Moscow has confirmed close-up footage of a helicopter misfiring into onlookers is genuine but has denied the timing.
After turning down the invite and sending Russia's foreign minister instead, the Kremlin unveiled Putin's alternative plans.
The Zapad drill on Europe's borders could include almost 10 times the permitted number of troops, provoking fears among NATO members.
The RS-24 Yars flew more than 3,000 miles starting in western Russia and according to the country's Ministry of Defense, confirmed its "reliability."
Ukraine's President Poroshenko said Moscow showed no signs of backing off from his country and recent military activity shows the Kremlin is preparing for a much bigger conflict.
Russia has said its new military drill is not aimed at any particular state, but the planned map shows the hypothetical enemy is in Poland, Latvia and Lithuania.
Russia has a giant drill planned—and Poland fears the troops involved won't leave.
Despite repeatedly assuring his rivals that Russia's upcoming military exercises were just that, President Vladimir Putin faces regional doubts.
The upcoming Russian drill has concerned the Baltics, but it is Moscow-ally Belarus that should be worried, Mikheil Saakashvili says.
The top U.S. Army commander in Europe complained that Russia is being too secretive about upcoming large-scale military drills.
The Belarusian leader speaks out against Brexit and nationalists within the EU.