• Ukrainian President Petro Poroshenko, right, looks at Ukrainian jailed pilot Nadezhda Savchenko during their meting in the Presidential Office in Kiev, Ukraine, Wednesday, May 25, 2016. Russia has released jailed pilot Nadezhda Savchenko, as part of a swap for two Russian servicemen imprisoned in Ukraine. (AP Photo/Efrem Lukatsky)

    Savchenko’s return heralds new turmoil in Ukraine

    MOSCOW (AP) — After being freed from a Russian jail, Ukrainian pilot Nadezhda Savchenko stands to emerge as a wild new force in Ukraine’s already volatile politics.

  • Ukrainian jailed pilot Nadezhda Savchenko, center, speaks to the media as she and her sister Vera, left of her, walk together upon her arrival at Boryspil airport outside Kiev, Ukraine, Wednesday, May 25, 2016. Russia has released jailed pilot Nadezhda Savchenko, as part of a swap for two Russian servicemen imprisoned in Ukraine. (AP Photo/Efrem Lukatsky)

    Ukrainian pilot returns home as unrivalled national hero

    MOSCOW (AP) — When war broke out in eastern Ukraine, pilot Nadezhda Savchenko left her hometown to join the fight against Russia-backed separatists. Nearly two years after she was captured, then tried and convicted in Russia, she returned home to a rapturous welcome in Kiev.

  • Ukrainian President Petro Poroshenko, left, looks at Ukrainian jailed pilot Nadezhda Savchenko  during their meting  in the Presidential Office in Kiev, Ukraine, Wednesday, May 25, 2016. Russia has released jailed pilot Nadezhda Savchenko, as part of a swap for two Russian servicemen imprisoned in Ukraine. (AP Photo/Efrem Lukatsky)

    Freed Ukrainian pilot returns home after 2 years in Russia

    KIEV, Ukraine (AP) — During the nearly two years that she was imprisoned in Russia, Ukrainian pilot Nadezhda Savchenko became a national hero in absentia, lauded for her flinty defiance. On Wednesday she made a celebrated return to the country still embroiled in a fight against Moscow-backed separatists.

  • In this Monday, March 21, 2016 file photo, Ukrainian pilot Nadezhda Savchenko smiles to journalists from a glass-covered cage in court in Donetsk, Rostov-on-Don region, Russia. A lawyer for one of two Russian servicemen jailed in Ukraine says the groundwork is being laid for a possible exchange with Savchenko, who is imprisoned in Russia. Lawyer Valentin Rybin told the state news agency Tass on Wednesday, May 25, 2016, that both Russians have submitted a petition for a pardon to Ukrainian President Petro Poroshenko. (AP Photo/Ivan Sekretarev, File)

    The Latest: Ukrainian pilot Savchenko freed, flown to Kiev

    KIEV, Ukraine (AP) — The Latest on Ukrainian pilot Nadezda Savchenko (all times local):

  • In this Monday, June 30, 2008 file photo, urine samples from Chinese athletes are recorded upon arriving at China Anti-Doping Agency in Beijing. So far, 31 unidentified athletes in six sports from 12 countries have been caught in retests of samples from the 2008 Beijing Games. Results on tests of 250 samples from the 2012 London Olympics will be known soon.  (AP Photo/Robert F. Bukaty, File)

    How it works: a look at the retests of Olympic drug samples

    GENEVA (AP) — Inside a non-descript concrete building in a Swiss parking lot lies evidence that could take down dozens of Olympic athletes.

  • WBA cruiserweight world champion Denis Lebedev, left, punches IBF cruiserweight champion Victor Emilio Ramirez during their IBF and WBA Super World cruiserweight title fight in Moscow, Russia, Saturday, May 21, 2016. (AP Photo/Alexander Zemlianichenko)

    Lebedev stops Ramirez to unify WBA, IBF cruiserweight belts

    MOSCOW (AP) — Russia’s Denis Lebedev stopped Argentina’s Victor Emilio Ramirez in the second round to unify the WBA and IBF cruiserweight titles on Saturday.

  • In this May 24, 2012, file photo, United States Olympic Committee  Secretary General Scott Blackmun discusses with the media an agreement between the IOC and the USOC at the SportAccord conference in Quebec City. In an interview Friday, May 20, 2106,  with The Associated Press, Blackmun said if stories of the Russian lab director's elaborate plans to keep the country's athletes from testing positive at the Sochi Games turn out to be true, then, in his words, "we need to admit the system is flawed." (Francis Vachon/The Canadian Press via AP, File) MANDATORY CREDIT

    USOC leader: Flawed anti-doping system needs attention

    The leader of the U.S. Olympic Committee says the latest anti-doping headlines make it “increasingly difficult to defend the current system.”