lobbing a mortar into the back yard of the british prime minister's residence was even more based. > two shells landed on mountbatten green, a grassed area near the foreign and commonwealth office.[2][7] one exploded and the other failed to detonate.[9] the third shell exploded in the back garden of 10 downing street, 30 yards (27 m) from the cabinet office, where the meeting was being held.[7][10] had the shell struck 10 downing street itself, it is likely the entire cabinet would have been killed.[10][11] on hearing the explosion, the cabinet ducked under the table for cover. bomb-proof netting on the windows of the cabinet office muffled the force of the explosion, which scorched the back wall of the building, smashed windows and made a crater several feet deep in the garden
Ireland