President Xi Jinping skipped the main event that marked the alleged killing of 300,000 Chinese people by Japanese troops in 1937.
German authorities have said the Paris terror attack suspect could be in Morocco.
The aircraft was not immediately identified, but the incident follows Russian encroachments on several neighbors' territories.
Russian President Vladimir Putin also ordered the country's armed forces to act in an "extremely tough way" in Syria to protect Russian forces fighting against ISIS.
Mikhail Khodorkovsky, once considered one of the richest men in Russia, spent a decade in jail on tax fraud and embezzlement charges.
Russian President Vladimir Putin said it was sad to see international human rights groups follow "double standards."
Adam Szubin, a senior U.S. Treasury official, said Thursday that ISIS also looted between $500 million and $1 billion from bank vaults captured in Iraq and Syria.
The incident comes just weeks after Russia allegedly violated Turkish airspace near the Syrian border. This is also not the first time the Russian military has breached Georgian skies.
Russian President Vladimir Putin also noted that recent airstrikes had damaged the Islamic State group's weapons stores and oil infrastructure.
On Thursday, Russia said that Turkish allegations of ethnic cleansing in Syria "sound like a display of impotent rage."
Russia holds $3 billion in Ukrainian bonds and Kiev is refusing to pay it back.
Angela Merkel might be Time's Person of the Year, but domestically she faces low approval ratings as Germany tries to cope with a massive refugee influx.
As the Kremlin tries to establish where the Su-24 jet was when it was shot down, Turkey considers levying its own sanctions against Russia.
With oil prices at their lowest since 2009, an official warns Russians will have to adjust to new living standards.
Following the Paris terror attacks, French hotels and airlines have seen losses and may not recover for another two to four months.
The brochure comes after a high-profile case in which a Russian student attempted to cross into Syria and join the terrorist group.
As Turkey calculates the economic losses it faces with Russian sanctions, the Kremlin says the ban on vegetables could be among the first lifted.
With Ukraine and Turkey both at odds with Moscow, a new military relationship has begun that could extend beyond tanks to artillery and personnel carriers.
"[It] is Cossacks who are on the front lines, protecting public order," said one of the group's leaders.
British lawmakers voted Wednesday to join the U.S.-led aerial campaign against the ISIS and other militant groups in Syria.
The Turkish president vowed not to be affected by pressure from Russian sanctions after Turkey shot down a Russian fighter jet in November.
The French foreign minister's remarks contrast with those of many Western leaders, who say the president must step down as part of any resolution of the Syrian conflict.