Problem: Menachem Begin ( listen ; Hebrew: m@nakhem be'giyn Menahem Begin, Polish: Mieczyslaw Biegun; Russian: Menakhem Vol'fovich Begin Menakhem Volfovich Begin; 16 August 1913 - 9 March 1992) was an Israeli politician, founder of Likud and the sixth Prime Minister of Israel.

On 17 May 1977 the Likud, headed by Begin, won the Knesset elections by a landslide, becoming the biggest party in the Knesset. Popularly known as the Mahapakh ("upheaval"), the election results had seismic ramifications as for the first time in Israeli history a party other than the Alignment/Mapai was in a position to form a government, effectively ending the left's hitherto unrivalled domination over Israeli politics. Likud's electoral victory signified a fundamental restructuring of Israeli society in which the founding socialist Ashkenazi elite was being replaced by a coalition representing marginalized Mizrahi and Jewish-religious communities, promoting a socially conservative and economically liberal agenda.  The Likud campaign leading up to the election centered on Begin's personality. Demonized by the Alignment as totalitarian and extremist, his self-portrayal as a humble and pious leader struck a chord with many who felt abandoned by the ruling party's ideology. In the predominantly Jewish Mizrahi working class urban neighborhoods and peripheral towns, the Likud won overwhelming majorities, while disillusionment with the Alignment's corruption prompted many middle and upper class voters to support the newly founded centrist Democratic Movement for Change ("Dash") headed by Yigael Yadin. Dash won 15 seats out of 120, largely at the expense of the Alignment, which was led by Shimon Peres and had shrunk from 51 to 32 seats. Well aware of his momentous achievement and employing his trademark sense for drama, when speaking that night in the Likud headquarters Begin quoted from the Gettysburg Address and the Torah, referring to his victory as a 'turning point in the history of the Jewish people'.  With 43 seats, the Likud still required the support of other parties in order to reach a parliamentary majority that would enable it to form a government under Israel's proportionate representation parliamentary system. Though able to form a narrow coalition with smaller Jewish religious and ultra-orthodox parties, Begin also sought support from centrist elements in the Knesset to provide his government with greater public legitimacy. He controversially offered the foreign affairs portfolio to Moshe Dayan, a former IDF Chief of Staff and Defense Minister, and a prominent Alignment politician identified with the old establishment. Begin was sworn in as Prime Minister of Israel on 20 June 1977. Dash eventually joined his government several months later, thus providing it with the broad support of almost two thirds of the Knesset. While Prime Minister, Yehuda Avner served as Begin's speech writer.

What happened after the elections?

Answer with quotes: effectively ending the left's hitherto unrivalled domination over Israeli politics.

Question:
Khalid Sheikh Mohammed (sometimes also spelled Khalid Shaikh Mohammed; among at least fifty pseudonyms; born March 1, 1964) is an Islamist militant held by the United States at the Guantanamo Bay detention camp under terrorism-related charges. He was named as "the principal architect of the 9/11 attacks" in the 9/11 Commission Report. Sheikh Mohammed was a member of Osama bin Laden's al-Qaeda organization, leading al-Qaeda's propaganda operations from around 1999 until late 2001. He confessed to FBI and CIA agents to a role in many of the most significant terrorist plots over the last twenty years, but his interrogators' use of enhanced interrogation techniques has caused some to question certain aspects of his confessions.
By the time the Bojinka plot was discovered, Mohammed had returned to Qatar and his job as a project engineer at the country's Ministry of Electricity and Water. He traveled in 1995 to Sudan, Yemen, Malaysia, and Brazil to visit elements of the worldwide jihadist community, although no evidence connects him to specific terrorist actions in any of those locations. On his trip to Sudan, he attempted to meet with Osama Bin Laden, who was at the time living there, aided by Sudanese political leader Hassan al-Turabi. After the US asked the Qatari government to arrest Mohammed in January 1996, he fled to Afghanistan, where he renewed his alliance with Abdul Rasul Sayyaf. Later that year, he formed a working relationship with Bin Laden, who had settled there.  Bin Laden and his colleagues relocated their operations to Afghanistan at this time. Abu Hafs al-Masri/Mohammed Atef, bin Laden's chief of operations, arranged a meeting between bin Laden and Mohammed in Tora Bora sometime in mid-1996, in which Mohammed outlined a plan that would eventually become the quadruple hijackings of 2001. Bin Laden urged Mohammed to become a full-fledged member of Al Qaeda, but he continued to refuse such a commitment until around early 1999, after the 1998 U.S. embassy bombings in Nairobi and Dar es Salaam.  Mohammed moved his family from Iran to Karachi, Pakistan, in 1997. That year, he tried unsuccessfully to join mujahideen leader Ibn al-Khattab in Chechnya, another area of special interest to Mohammed. Unable to travel to Chechnya, he returned to Afghanistan. He ultimately accepted bin Laden's invitation to move to Kandahar and join al-Qaeda as a full-fledged member. Eventually, he became leader of Al Qaeda's media committee.
Answer this question using a quote from the text above:

what was his greatest accomplishment?

Answer:
Eventually, he became leader of Al Qaeda's media committee.