Russian opposition leader Alexey Navalny  and his wife Yulia attend an opposition march in central Moscow on Sunday in memory of murdered Kremlin critic Boris Nemtsov. Photograph: Vasily Maximov/AFP/Getty Images

With just over two weeks to go until the presidential election, Russian opposition leaders are more divided than ever on how best to challenge Vladimi(...)

Russian opposition leader Mikhail Kasyanov (centre) and supporters of  Boris Nemtsov  during Sunday’s  memorial march in Moscow. Photograph: Vasily Maximov/AFP/Getty Images

Thousands of people marched though Moscow on Sunday in memory of Boris Nemtsov, the Russian opposition leader, who was shot dead in a daring contract (...)

People participate with a banner ‘Russia will be free’ during a memorial march for Boris Nemtsov to mark in Moscow on Saturday to mark the  first anniversary of his murder. Photograph: Yuri Kochetkov/EPA

Thousands of people marched through central Moscow on Saturday to honour Boris Nemtsov, the Russian opposition leader who was assassinated a year ago (...)

Former Russian prime minister Mikhail Kasyanov, who has condemned as ‘incitement to murder’ a video posted by Chechen leader Ramzan Kadyrov showng him in the cross-hairs of a sniper’s rifle. Photograph: Alexander Zemlianichenko/AP

One of Russian president Vladimir Putin’s most loyal allies has stirred fear among Kremlin critics by releasing a video showing opposition leader Mik(...)

People lay flowers at the spot where Russian opposition politician Boris Nemtsov was murdered near the Kremlin on Grand Moskvorestsky bridge in Moscow. Photograph: Sergei Chirikov/EPA

A mound of rain-drenched flowers still marks the place on the bridge near the Kremlin where Boris Nemtsov, the Russian opposition leader, was shot dea(...)

European Parliament president Martin Schulz has denounced the “repeated and arbitrary” denial of admission into Russia of Latvian MEP Sandra Kalniete. Photograph: Emanuel Dunand/AFP/Getty Images

Tucked away on the ground floor of the labyrinthine European Parliament building in Brussels is the Anna Politkovskaya room. The parliament’s main pre(...)

The body of Russian opposition leader Boris Nemtsov is covered with plastic lies on Moskvoretsky bridge near St. Basil cathedral  in central Moscow. Photograph: AFP

Ukrainian president Petro Poroshenko said on Saturday Russian opposition politician Boris Nemtsov was murdered because he planned to disclose evidenc(...)