The Guardian’s Paul Lewis and Rob Evans on investigating one of England’s most covert police units and learning that they were using the identities of dead children. Frank Bennett reflects on the impact of discovering that a police spy had stolen his dead brother’s identity to infiltrate two leftwing organisations, and to deceive a woman into a sexual relationship The Undercover Police Scandal: Love and Lies Exposed is available now on ITVX. Help support our independent journalism at theguardian.com/infocus

Guardian investigative editor Paul Lewis and investigative reporter Rob Evans detail their decade-long investigation into undercover policing. At least 139 officers were given fake identities to monitor the inner workings of more than 1,000 political groups. Jessica, a former member of one of those groups, describes the impact of discovering that a man with whom she began a relationship in 1992 was actually an undercover cop The Undercover Police Scandal: Love and Lies Exposed is available on ITVX. Help support our independent journalism at theguardian.com/infocus

Michael Safi travelled to north-east Syria to speak to IS foreign fighters imprisoned there. And discovered that a change in the US administration, and USAid funding cuts, means there is a growing fear of prison breaks. Help support our independent journalism at theguardian.com/infocus

What can a major leak teach us about how call-centre fraudsters work? Simon Goodley reports. Help support our independent journalism at theguardian.com/infocus

The US has suspended all military aid to Ukraine. What does this mean for European security? Andrew Roth reports. Help support our independent journalism at theguardian.com/infocus

What do Ukrainians make of the two presidents’ fractious meeting – and would they support a Trump-led peace deal? Luke Harding reports. Help support our independent journalism at theguardian.com/infocus

Doctors in Gaza say they have been targeted for doing their jobs, detained and even tortured. Annie Kelly reports. Help support our independent journalism at theguardian.com/infocus

Syria has a new leader, and for thousands it is a time of celebration and optimism. But old enmities and fears about what comes next haunt the country. Michael Safi reports. Help support our independent journalism at theguardian.com/infocus

How much is immigration responsible for Spain’s economic growth? Ashifa Kassam reports. Help support our independent journalism at theguardian.com/infocus

A Labour member of the House of Lords offered access to ministers during discussions about a commercial deal worth tens of thousands of pounds, an undercover investigation can reveal. Henry Dyer reports. Help support our independent journalism at theguardian.com/infocus