<a href="https://en.wikipedia.org/wiki/The_Troubles" id="mwARE" rel="mw:WikiLink" title="The Troubles">The Troubles</a>: The <a class="mw-redirect" href="https://en.wikipedia.org/wiki/Provisional_IRA" id="mwARI" rel="mw:WikiLink" title="Provisional IRA">Provisional IRA</a> launches <a href="https://en.wikipedia.org/wiki/Downing_Street_mortar_attack" id="mwARM" rel="mw:WikiLink" title="Downing Street mortar attack">a mortar attack</a> on <a href="https://en.wikipedia.org/wiki/10_Downing_Street" id="mwARQ" rel="mw:WikiLink" title="10 Downing Street">10 Downing Street</a> in London, the headquarters of the British government.