Russia staged a sombre funeral ceremony today for Andrei Karlov at the Foreign Ministry building in Moscow where the slain envoy's body lay in an open casket in Russian Orthodox tradition.
President Putin was among mourners, including relatives and fellow diplomats laying flowers near Karlov's body in a ceremony in the marbled lobby of the looming Stalin-era skyscraper in central Moscow.
The normally tough-guy President was photographed looking heartbroken standing over the casket where he lay red roses.
Putin, who has said he knew Karlov personally and posthumously awarded him the highest military medal of Hero of Russia, paid his respects, briefly sitting beside the coffin and speaking to Karlov's widow.
Karlov's name was etched into a slab of pink marble on the wall of the foreign ministry building commemorating Russian diplomats killed in the line of duty.
Proceedings moved to Moscow's gold-domed Christ the Saviour Cathedral later on Thursday where the head of the Russian Orthodox Church, Patriarch Kirill, led a ceremony.
"He will go down in the history of the Fatherland," said Kirill.
The envoy was buried later on Thursday in a cemetery in a northern Moscow suburb with military honours, his coffin draped in the Russian flag.
The Russian ambassador to Turkey was shot dead in Ankara on Monday by a Turkish police officer who shouted "Allahu Akbar" and "Don't forget Aleppo".