The former home secretary's latest outburst came in the wake of the Commons Gaza vote chaos.
Prime minister says Speaker should not have changed parliament's procedures in the face of "intimidation or aggressive behaviour" by campaigners.
UK MPs are still rowing over parliamentary procedure – rather than an actual ceasefire.
The SNP chief said his position was "untenable" following last night's Commons chaos.
Maria Caulfield said she would "struggle" to support the under-fire Commons Speaker.
The Commons Speaker was forced to apologise after chaotic scenes in parliament.
Debate overshadowed by furious row over Speaker Lindsay Hoyle.
It's an unusual statement from a member of the Royal Family, who have to stay apolitical.
Israeli Prime Minister Benjamin Netanyahu is brushing off growing calls to halt the military offensive in Gaza and vowing to “finish the job."