A man holds a poster reads "Freedom for Navalny" during a protest in support of jailed opposition leader Alexei Navalny in St. Petersburg, Russia, Wednesday, April 21, 2021. Police across Russia have arrested more than 180 people in connection with demonstrations in support of imprisoned opposition leader Alexei Navalny, according to a human rights group. Navalny's team called the unsanctioned demonstrations for Wednesday after reports that his health is deteriorating while on hunger strike, which he began March 31. (AP Photo/Dmitri Lovetsky)

Russian Prime Minister Mikhail Mishustin, center, applauds as Russian President Vladimir Putin gives his annual state of the nation address in Manezh, Moscow, Russia, Wednesday, April 21, 2021. Putin's state-of-the-nation speech comes amid a new surge in tensions with the West over a Russian troop buildup near the border with Ukraine and a hunger strike by jailed Russian opposition leader Alexei Navalny protesting a lack of adequate medical treatment in prison. (Mikhail Metzel, Sputnik, Kremlin Pool Photo via AP)

Russian President Vladimir Putin gestures as he gives his annual state of the nation address in Manezh, Moscow, Russia, Wednesday, April 21, 2021. Putin's state-of-the-nation speech comes amid a new surge in tensions with the West over a Russian troop buildup near the border with Ukraine and a hunger strike by jailed Russian opposition leader Alexei Navalny protesting a lack of adequate medical treatment in prison. (AP Photo/Alexander Zemlianichenko)

Russian President Vladimir Putin leaves the hall after his annual state of the nation address in Manezh, Moscow, Russia, Wednesday, April 21, 2021. Putin's state-of-the-nation speech comes amid a new surge in tensions with the West over a Russian troop buildup near the border with Ukraine and a hunger strike by jailed Russian opposition leader Alexei Navalny protesting a lack of adequate medical treatment in prison. (AP Photo/Alexander Zemlianichenko)

Russian President Vladimir Putin gives his annual state of the nation address in Manezh, Moscow, Russia, Wednesday, April 21, 2021. Putin's state-of-the-nation speech comes amid a new surge in tensions with the West over a Russian troop buildup near the border with Ukraine and a hunger strike by jailed Russian opposition leader Alexei Navalny protesting a lack of adequate medical treatment in prison. (AP Photo/Alexander Zemlianichenko)

Police officers detain a man during a protest in support of jailed opposition leader Alexei Navalny in Ulan-Ude, the regional capital of Buryatia, a region near the Russia-Mongolia border, Russia, Wednesday, April 21, 2021. Navalny's team has called for nationwide protests on Wednesday following reports that the politician's health was deteriorating in prison, where he has been on hunger strike since March 31. Russian authorities have stressed that the demonstrations were not authorized and warned against participating in them. (AP Photo/Anna Ogorodnik)

Russian President Vladimir Putin walks to give his annual state of the nation address in Manezh, Moscow, Russia, Wednesday, April 21, 2021. Putin's state-of-the-nation speech comes amid a new surge in tensions with the West over a Russian troop buildup near the border with Ukraine and a hunger strike by jailed Russian opposition leader Alexei Navalny protesting a lack of adequate medical treatment in prison. (Dmitry Astakhov, Sputnik, Kremlin Pool Photo via AP)

A activist holds a poster reading "Freedom for Navalny!" during the opposition rally in support of jailed opposition leader Alexei Navalny in Moscow, Russia, Wednesday, April 21, 2021. Police across Russia have arrested more than 180 people in connection with demonstrations in support of imprisoned opposition leader Alexei Navalny, according to a human rights group. (AP Photo/Pavel Golovkin)

Russian President Vladimir Putin arrives to give his annual state of the nation address in Manezh, Moscow, Russia, Wednesday, April 21, 2021. Putin's state-of-the-nation speech comes amid a new surge in tensions with the West over a Russian troop buildup near the border with Ukraine and a hunger strike by jailed Russian opposition leader Alexei Navalny protesting a lack of adequate medical treatment in prison. (AP Photo/Alexander Zemlianichenko)

Russian President Vladimir Putin, center, gives his annual state of the nation address in Manezh, Moscow, Russia, Wednesday, April 21, 2021. Putin's state-of-the-nation speech comes amid a new surge in tensions with the West over a Russian troop buildup near the border with Ukraine and a hunger strike by jailed Russian opposition leader Alexei Navalny protesting a lack of adequate medical treatment in prison. (AP Photo/Alexander Zemlianichenko)

People walk during a protest in support of jailed opposition leader Alexei Navalny in St. Petersburg, Russia, Wednesday, April 21, 2021. Police across Russia have arrested more than 180 people in connection with demonstrations in support of imprisoned opposition leader Alexei Navalny, according to a human rights group. Navalny's team called the unsanctioned demonstrations for Wednesday after reports that his health is deteriorating while on hunger strike, which he began March 31. (AP Photo/Dmitri Lovetsky)

Policemen stand in preparation for a possible opposition rally as Russian President Vladimir Putin seen on television screen during his annual state of the nation address, in Khabarovsk, 6,100 kilometers (3,800 miles) east of Moscow, Russia, Wednesday, April 21, 2021. Navalny's team has called for nationwide protests on Wednesday following reports that the politician's health was deteriorating in prison, where he has been on hunger strike since March 31. Russian authorities have stressed that the demonstrations were not authorized and warned against participating in them. (AP Photo/Igor Volkov)