The deal has finally been done. Iran and the big powers this week signed a lengthy document putting restraints on the Iranian nuclear programme in exchange for a relaxation of US, European Union and United Nations sanctions that have seriously damaged the Iranian oil and gas sector and economy.

However, it seems too early for celebrations by either side. The real test of the nuclear agreement’s viability will be over the next two months of wrangling in the US between the White House and Congress.

Israel,