"Actually since the comment in this that the US in Syria were 'illegal' which reflects what Putin said on the subject I have been thinking we have a Russian operating on this site."

No UN mandate equals illegality of action. Show me any UN authorisation.
As far as I am aware the only mandate operating is mentioned below:
"Security Council Grants Six-Month Mandate Renewal for United Nations Disengagement Observer Force, Adopting Resolution 2450 (2018)"
1)The fallacious argument in Iraq:
In the run-up to the Iraq war of 2003, there was the famous 45-minute claim concerning Iraq's supposed weapons of mass destruction. Laying the ground for an argument of anticipatory self-defence against a strike that might come in the future, the UK argued that Iraqi weapons of mass destruction might reach UK military bases in Cyprus with minimum warning.

2)The doctrine of forcible humanitarian action gained credence throughout the 1990s when it was applied to rescue the Kurds of northern Iraq and the Marsh Arabs in the south of Iraq from destruction by Saddam Hussein. It was later employed unopposed in cases including Liberia and Sierra Leone.

However, international division about its application emerged in the wake of the operation on behalf of the Kosovo Albanians of 1999.

Since then, the UN has embraced the concept that international action can be taken to rescue a population under immediate threat. However, the doctrine of responsibility to protect (R2P) was narrowed down to cover operations mandated by the Security Council. Still, a number of states claim a right to act when the Council cannot.

Not much point in having an international body if it is consistantly ignored. How many resolutions id Israel in breach of?