Diplomatic correspondent Lazar Berman checks in from the train to Lviv as US correspondent Jacob Magid and political reporter Carrie Keller-Lynn discuss the Knesset, UN and Iran

Senate majority leader, who was one of four Democrats to vote against 2015 pact, makes first public comments on matter since coming out against Trump's 2018 withdrawal

Paris points to 'urgency' in concluding talks, as all sides signal progress; Iran's chief negotiator returns to Vienna after returning home for consultations

Former top Netanyahu aide Meir Ben Shabbat says Tehran must not be allowed to take advantage of world focus on Russian invasion

Ali Bagheri heads back to talks in Austria with 'clear instructions' to work to 'solving problems in order to reach an agreement,' according to Iranian state media

Foreign Minister Amir-Abdollahian says ready to 'immediately conclude a good deal' if Western parties show 'real will'

Assertion by Tehran's nuclear chief contradicts reported draft terms of accord being negotiated in Vienna, which are said to restrict enrichment to 5%

Degree of Putin's frustration with US opposition to his incursion will dictate whether he prioritizes deal to prevent nuclearized neighbor over effort to push back against the West

As agreement seems to come together, Iranian top diplomat says Tehran won't give up its 'red lines' in negotiations

Diplomacy correspondent Lazar Berman proposes that the Iran nuclear deal and Russian tension are tied; Health reporter Nathan Jeffay brings us promising med-tech research