The Gaza ceasefire negotiations in Doha in recent weeks have not led anywhere because of "fundamental differences between parties", Qatar's Prime Minister Sheikh Mohammed bin Abdulrahman Al Thani said on Tuesday at an economic forum held in Doha.

A much-hyped phone call between Donald Trump and Vladimir Putin on Monday was followed up by optimistic statements by the pair – but there are doubts over whether it marked any real progress towards peace in Ukraine.

President Donald Trump held a high-stakes phone call with Russian President Vladimir Putin on Monday as he continued his push for an end to Moscow's 3-year-old invasion of Ukraine.

President Donald Trump thinks Russia will likely walk away from Ukraine peace talks if the US threatens more sanctions, according to his top diplomat, supporting the White House’s decision not to pressure Moscow despite its resistance to a ceasefire.

President Trump also spoke with Ukrainian leader Volodymyr Zelensky and European leaders in hopes of making progress toward a ceasefire.