The Glam

More than 900 companies sue US over Trump’s tariff regime

Also in today’s newsletter, the US president offers first glimpses of how Washington would justify an attack on Iran

Data shows sharp rise in Americans applying, but overall number of people granted British citizenship fell last year

London mayor says plan will create ‘world-leading urban space for shopping and leisure’

Those with experience of historic tie-ups caution on poor cultural compatibility and difficulty of creating synergies

Secretary of state says Tehran’s reluctance to discuss weapons is a ‘big problem’

The FT’s Europe editor replied to reader’s questions

Probe into president’s ties to sex offender has disrupted succession planning at forum

How technology changes the world of work is not just a technical question — and never has been

In Reform, socially conservative Christianity has finally found a UK vehicle for its agenda on traditional families

The US president’s speech also renews focus on electricity affordability

Shortcut used by Chinese groups lets smaller models learn from bigger, more powerful systems

Anna Ziegler blends memories, monologues and confessions in an emotional new play at London’s Donmar Warehouse

A typist with ambition collides with fascists and an accidental time machine in this intriguing fantasy set in wartime London

Oliver Laxe’s Oscar-worthy film follows a motley group of ravers, and a father searching for his daughter, into the Moroccan Sahara

Major investor Anta Sports may have ‘negative impact’ on Greater China business, sportswear group warns

Grants drop by fifth after the introduction of tougher immigration rules but asylum numbers are little changed

Also in today’s newsletter: Rubio promises investigation into Cuba shootings and Hillary Clinton appears before House committee

Lessons from four years of war: it’s the economy, stupid

From Michelangelo to Marie Antoinette, few can resist the bird’s complex appeal

David Kogan warns ‘clock is ticking’ for divisions to agree how money should be redistributed from top level of the game

Finland struggles to replicate cold war-era artillery depots for high-tech weaponry that rapidly turns obsolete

Coalition, including BBC, Sky News and FT, wants to establish shared standards and licensing frameworks for access

The administration handing out refunds to Chinese companies will be a terrible look

Why viral violence is becoming a prime mover of politics