Biden renews bid for Kosovo-Serbia 'mutual recognition'
Serbia refuses to recognise the independence of Kosovo, which seceded in 2008, almost a decade after a NATO bombing campaign forced Serbian troops to abandon their conflict against ethnic Albanian guerrillas.
The two held a high-profile meeting at the White House overseen by former US president Donald Trump last September, but the stalemate has continued.
"Normalisation of relations with Serbia is essential for Kosovo to realise its potential," Biden wrote this week in a letter of congratulations to newly elected Kosovo President Vjosa Osmani, made public by her office on Tuesday.
Biden said the US would "continue to support efforts to secure a lasting peace", calling for a "comprehensive normalisation agreement" that would be "centred on mutual recognition".
Osmani was chosen as leader earlier this month after a landslide election victory in February.
Muslim-majority Kosovo is considered one of the most pro-American parts of the world, with a statue of President Bill Clinton, a boulevard named after former President George W. Bush and a bust of former secretary of state Madeleine Albright.
The two sides have negotiated under EU auspices since 2011 but a solution to the status dispute has remained out of reach.