Middle East ceasefire in serious doubt as Israel assaults Lebanon and Iran blocks oil tankers

Inclusion of Lebanon is significant difference in interpretation of truce agreed at 11th hour on Tuesday

• Middle East crisis – live updates

The fate of the two-week ceasefire in the Iran conflict looked uncertain on Wednesday as both sides gave divergent versions of what had been agreed, Israel intensified its bombing campaign in Lebanon and Iran halted the passage of oil tankers because of an Israeli ceasefire “breach”.

Iran and Pakistan, which brokered the 11th-hour truce, both asserted that the ceasefire included Lebanon. Israel’s prime minister, Benjamin Netanyahu, disagreed and Israeli forces unleashed their heaviest attack of the war so far on more than 100 targets in Beirut and across the country.