Donald Trump\u00a0hailed the strikes carried out against Syria by the US, UK and France as \u201cperfectly executed\u201d on Saturday, adding: \u201cCould not have had a better result. Mission Accomplished!\u201d\r\nThe US president thanked London and Paris for their \u201cwisdom and the power of their fine Military\u201d in joining Washington in launching more than 100 missiles on Friday night against what they say were Syrian chemical weapons facilities.\r\n\r\nTrump added: \u201cSo proud of our great Military which will soon be, after the spending of billions of fully approved dollars, the finest that our Country has ever had. There won\u2019t be anything, or anyone, even close!\u201d\r\nTrump announced the military action in a speech late on Friday, a week after the Syrian regime was accused of carrying out a chemical weapons attack in the Damascus suburb of Douma that left 40 people dead and hundreds injured. The president said he had directed the US military to conduct \u201cprecision strikes\u201d against Assad\u2019s chemical weapons capabilities, with targets including a scientific research center in the Syrian capital and two chemical weapons storage facilities west of Homs.\r\nTrump\u2019s use of \u201cmission accomplished\u201d less than 24 hours after launching the missiles echoed President George W Bush\u2019s infamous 2003 speech a month after US troops were deployed in Iraq. Although Bush did not utter the phrase during his televised address, he stood under a \u201cMission Accomplished\u201d banner and spoke of how the US and its allies had \u201cprevailed\u201d. The event later became a symbol of the controversy as the war dragged on and resulted in the deaths of thousands of American troops and tens of thousands of civilian casualties. Thousands of US troops remain in Iraq today.\r\nThe Pentagon struck a similarly defiant tone in a briefing with reporters Saturday, where officials labeled Friday night\u2019s airstrikes a success.\r\nPentagon spokeswoman Dana White said: \u201cWe met our objectives. We hit the sites, the heart of the [chemical] weapons program. So it was mission accomplished.\u201d\r\nLt Gen Kenneth McKenzie, the director of the joint chiefs of staff, described the mission as \u201cprecise, overwhelming and effective\u201d.\r\nOfficials at the Pentagon notably would not set a bar for what would constitute further military action, nor did they directly respond to how the US might respond if\u00a0Russia\u00a0or Iran made good on their threats to engage in retaliatory strikes.\r\nThe Pentagon also disputed the Russian military\u2019s claims that Syrian air defense units had downed 71 out of 103 cruise missiles launched by the US and its allies. \u201cThe Russia disinformation campaign has already begun,\u201d White said.\r\nThe launch of more than 100 missile strikes drew mixed reaction in Washington, with some calling Trump\u2019s decision illegal.\r\n\u201cA pinpointed, limited action to punish and hopefully deter Assad from doing this again is appropriate, but the administration has to be careful about not getting us into a greater and more involved war in\u00a0Syria,\u201d Democratic Senate minority leader Chuck Schumer said in a statement.\r\nNancy Pelosi, the Democratic leader in the House, said: \u201cThe latest chemical weapons attack against the Syrian people was a brutally inhuman war crime. Yet one night of airstrikes is no substitute for a coherent strategy.\u201d\r\nPelosi called on Trump to seek approval from Congress for military action in the region. She said the president must present \u201ca comprehensive strategy with clear objectives\u201d.\r\nThe US constitution requires that any sustained military action be authorized by Congress. Trump, like his predecessor Barack Obama, has thus far relied on a\u00a0sweeping 2001 war authorization\u00a0passed in the aftermath of the 9\/11 attacks.\r\nThe AUMF, which has not expired, approved the use of military force against those responsible for the attacks, primarily al-Qaida, and \u201cassociated groups\u201d.\r\nThe Obama administration justified military action targeting Islamic State by arguing the terrorist group was an offshoot of al-Qaida. A faction of lawmakers in both parties have suggested Trump cannot make the same case for striking the Syrian government.\r\nJustin Amash, a libertarian congressman from Michigan, condemned Trump\u2019s refusal to approach Congress before employing military options. He said: \u201cThese offensive strikes against Syria are unconstitutional, illegal, and reckless.\u201d\r\nHours before Trump\u2019s announcement on Friday, 88 Republican and Democratic members of Congress signed a letter imploring the president to consult Congress prior to engaging US armed forces.\r\n\u201cEngaging our military in Syria when no direct threat to the United States exists and without prior congressional authorization would violate the separation of powers that is clearly delineated in the constitution,\u201d the letter read.\r\n\u201cWe stand ready to consider the facts before us and share the burden of decisions made regarding US involvement in the quickly escalating Syrian conflict.\u201d\r\nRepublican leaders were nonetheless supportive of Trump\u2019s response in Syria and did not provide any indication that they would challenge his authority.\r\nResponding to Trump\u2019s announcement on Friday, Republican Senate majority leader Mitch McConnell said: \u201cI support both the action and objective.\u201d\r\nRepublican House speaker Paul Ryan said Assad\u2019s \u201cbarbaric use of chemical weapons cannot go unanswered\u201d. But he added that Russia and Iran must also be held accountable for enabling the Syrian regime, stating the two countries \u201chave blood on their hands\u201d.\r\nTrump\u2019s move on Friday came one year after he similarly launched retaliatory airstrikes against Assad\u2019s regime a following a poison gas attack. In that instance, the Pentagon fired 59 Tomahawk cruise missiles on a Syrian government airbase.\r\nThe UN security council will meet later on Saturday at Russia\u2019s request to discuss the airstrikes, according to a diplomat.\r\nThe Organisation for the Prohibition of Chemical Weapons (OPCW) was set to begin an investigation Saturday at the site of last week\u2019s chemical weapons attacks. The US, UK and\u00a0France\u00a0cited their own intelligence to conclude that the Syrian regime was behind the attack, an allegation that has been vehemently denied by Damascus and Russia.