The Office of the Special Prosecutor in the Hague says Thaci and nine others “are criminally responsible for nearly 100 murders” of political opponents and Kosovar Albanian, Serb and Roma victims.
The United States, the EU and Russia are battling for influence over peace negotiations between Kosovo and Serbia.
Just days after coming to power Kosovo's new prime minister Avdullah Hoti has lifted some of the restrictions on Serb goods entering the country.
Kosovo's and Serbia's land-swap troubles, the new Morandi bridge in Genoa, Poland's postal-presidential vote, protests in Lebanon and a new underwater bridge between Denmark and Germany.
Kosovans have suffered enough, said the country's prime minister, as he hit out at the possibility of a land-swap deal with Serbia
But Belgrade says that interim PM Albin Kurti's move is "fake news" and claims that Kosovo has instead increased punitive measures.
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Kosovo's new prime minister took power at the beginning of February and his job is now to lead the negotiations to try and push for Serbia to recognise Kosovo as an independent state
Euronews' Jack Parrock sat down with Kosovan PM Albin Kurti, who outlined his views on the Serbia roadmap, and how EU officials should have a pan-European perspective.
It comes weeks after Belgrade and Pristina agreed to resume direct flights for the first time since the Kosovo War.
Kurti, 44, spent two-and-a-half years in jail for his role in the Kosovan independence movement.
"Do your job," said Vučić. "You are sovereign states. Serbia is a sovereign state. We do everything that is for the best for our people and for our country.”
There have been no commercial flights between Kosovo and Serbia in 21 years and it takes over five hours overland from Belgrade to Pristina.
It's been three months since the election and a government has still not been formed.
It's been nearly three months since elections, but the winning parties just cannot come to a deal.
Hashim Thaci was on a visit to the town of Thumanë to express his sympathy and support to the victims of Tuesday's earthquake
After Albania and North Macedonia had their EU accession bid vetoed weeks ago, Western Balkan leaders have met to discuss their own free transit zone.
The election signals a new era for politics in Kosovo, previously dominated by figureheads from the country's late-1990s war.
Themes dominating the poll are rampant corruption, widespread unemployment and sour relations with neighbouring Serbia that it must try to rectify if it wants to pave the way to EU membership.
The Czech president has created controversy after saying he wanted to revoke recognition of Kosovo's independence during a state visit to Serbia
EU warns Serbia to cancel free trade pact with Russia if it wants to join bloc
Aridan Arifaj, deputy Chief of Staff to President of the Republic of Kosovo told Euronews that it was critical that Kosovo's political parties formed a government rapidly after snap elections.
Kosovo MPs voted to dissolve parliament on Thursday, paving the way for a national election after Prime Minister Ramush Haradinaj resigned last month.
Kosovo and Serbia have been told to put their differences aside so that both countries can resume membership talks with the EU.
As the investigation into alleged war crimes committed in Kosovo continues in The Hague, a guerilla fighter turned Prime Minister has resigned but refused to answer questions.
Ramush Haradinaj has resigned due to a new court summons and president Vucic has labelled it a 'political trick' intended to fuel ethnic tensions.