Everyone will have been appalled at the terrible events in Boston.
While the culprits and motivation behind the US terror attacks are still unclear, this will obviously entail a review of security arrangements for both Lady Thatcher's funeral and the London Marathon.
In light of the awful attacks in Boston they will require extra vigilance from everyone involved and it is also to be hoped that everyone recognises the added responsibility of co-operating with the Police and the Authorities at both events.
More top news
A vulnerable man who accused Leon Brittan of sexual abuse has claimed he was encouraged to make the allegations by campaigners.
Heavy downpours have triggered flash floods in Yorkshire.
The IMF's forecast for global growth has been cut to 3.1% - a fifth successive year of declining growth, the weakest performance since 2009.