From the Crimea to Manchester

I have just received my activation code from the charity Rethink Mental Illness for the Manchester Marathon.  A lot of information was requested of me and while in most cases I just click 'accept', as this participation meant a great deal to me, I thought it prudent to review the Terms And Conditions.  I skimmed (but not skimped) through much of it, imagining how long it would take a lawyer or lawyers to compose this.  There was the important aspect (of which I am sure Rethink would have informed me) was the need to produce photographic identification before the race.
What really caught my eye was the 'Force Majeure' clause.  This posited circumstances beyond the 'reasonable control' (an amusingly measured caveat) of the organisers.  Some of the situations that would force an abandonment were 'strikes, lockouts' and the like, terrorist acts or the threat of terrorist action (of course), earthquakes and other natural disasters, pandemic or epidemic, riots, invasion, "war (declared or not)" and the threat of war.  Amid the jocularity of this hyperbole that some legal type sought to cover themselves for the end of the world as we know it, was the use of "war (declared or not)" that was truly intriguing.  How one could judge an undeclared war is very subjective.  We know it when we see it but how do we quantify it?  Is it battlefield deaths in what technically aren't battles, but pugnacious military policing or is it a bloodless seizure of territory?  Naturally, it is the Ukraine crisis that has propagated the formulation of "war (declared or not)."  Belarus has already amended its military doctrine to take account of this, where if an insurgency is foreign-backed, that is a declaration of war in itself.  The West has issued but pinpricks to Russian aggression in Ukraine, but it is understandable that our lawyers would seek to protect their clients.  So if Russia fomented division in Manchester to dissolve all civil authority from London, yet denied it all along, I would accept that as beyond the 'reasonable control' of the organisers and the subsequent abandonment of the marathon.