World War II: Great Britain declares war on <a href="https://en.wikipedia.org/wiki/Finland" id="mw5A" rel="mw:WikiLink" title="Finland">Finland</a>, <a href="https://en.wikipedia.org/wiki/Kingdom_of_Hungary" id="mw5Q" rel="mw:WikiLink" title="Kingdom of Hungary">Hungary</a> and <a href="https://en.wikipedia.org/wiki/Kingdom_of_Romania" id="mw5g" rel="mw:WikiLink" title="Kingdom of Romania">Romania</a>.<sup about="#mwt102" class="mw-ref reference" data-mw='{"name":"ref","attrs":{},"body":{"id":"mw-reference-text-cite_note-19"}}' id="cite_ref-19" rel="dc:references" typeof="mw:Extension/ref"><a href="./December_5#cite_note-19" id="mw5w" style="counter-reset: mw-Ref 19;"><span class="mw-reflink-text" id="mw6A">[19]</span></a></sup>
<span class="mw-reference-text" id="mw-reference-text-cite_note-19"><cite about="#mwt99" class="citation web cs1" id="mwB_o"><a class="external text" href="https://www.bbc.co.uk/history/ww2peopleswar/timeline/factfiles/nonflash/a1138501.shtml" id="mwB_s" rel="mw:ExtLink nofollow">"Fact File: Declaration of War on Finland, Hungary and Romania, 5 December 1941"</a>. <i id="mwB_w">WW2 People's War</i>. <a href="./BBC" id="mwB_0" rel="mw:WikiLink" title="BBC">BBC</a>. 2014-10-15<span class="reference-accessdate" id="mwB_4">. Retrieved <span class="nowrap" id="mwB_8">2019-08-07</span></span>.</cite><span about="#mwt99" class="Z3988" id="mwCAA" title="ctx_ver=Z39.88-2004&amp;rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&amp;rft.genre=unknown&amp;rft.jtitle=WW2+People%27s+War&amp;rft.atitle=Fact+File%3A+Declaration+of+War+on+Finland%2C+Hungary+and+Romania%2C+5+December+1941&amp;rft.date=2014-10-15&amp;rft_id=https%3A%2F%2Fwww.bbc.co.uk%2Fhistory%2Fww2peopleswar%2Ftimeline%2Ffactfiles%2Fnonflash%2Fa1138501.shtml&amp;rfr_id=info%3Asid%2Fen.wikipedia.org%3ADecember+5"></span></span>