Russia’s leading opposition figure and chief Kremlin critic, Alexei Navalny, was detained by local police on Sunday, moments after his return to the country.He was taken away “by police officers at the border” without explanation, his spokesperson Kira Yarmysh tweeted. “The lawyer was not allowed to go with him, because just seconds ago ‘he passed the border.'”Navalny and his wife Yulia were returning from a