[4] In November 2014, he and fellow MEP Mercedes Bresso were appointed by the constitutional affairs committee to explore the possibilities of the eurozone governance reform without any treaty change.

He was chairman of the committee in 1997-2007, but ousted after a contest within the centre-right European People's Party by Jacek Saryusz-Wolski, who was followed in 2009 by Gabriele Albertini; Brok returned to the position for the period from 2012 until 2017.

[8] In 2010, he joined the Friends of the EEAS, an unofficial and independent pressure group formed because of concerns that the High Representative of the Union for Foreign Affairs and Security Policy Catherine Ashton was not paying sufficient attention to the Parliament and was sharing too little information on the formation of the European External Action Service.

[9] In a 2013 own-initiative report drawn up by Brok and fellow MEP Roberto Gualtieri, the European Parliament called for overhauling the EEAS and increasing parliamentary influence over the EU's diplomatic service.

[13] Along with Greek MEP Dimitris Tsatsos, he was one of the European Parliament's two official observers at the EU negotiations that culminated in the Treaty of Nice, a deal which he later harshly criticized.

[21] When the request of Lithuanian MEP Gabrielius Landsbergis to meet with Russian MPs and officials in Moscow was denied amid the Russo-Ukrainian War in early 2015, Brok complained that the case represents “a new level of non-co-operation.”[22] Amid tensions between Germany and the United States over intelligence cooperation in 2015, Brok cited the Transatlantic Trade and Investment Partnership as one project that could fail as a result of the frayed relations, calling the tensions “a further blow for all those who want closer relations with America.” Asked why Germans failed to spot American violations of a 2002 accord on sharing intelligence, he suggested that too many Germans working in the BND had “a blind loyalty” to their trans-Atlantic partners.

[23] Following British prime minister David Cameron's decision to wield the UK veto against European Union treaty change, Brok said it was time to “marginalize Britain, so that the country comes to feel its loss of influence”.

[27] In 2011, members of the European Parliament Committee on Legal Affairs voted unanimously against a request by German prosecutors to lift Brok's immunity in a tax blunder.

[29] On 21 March 2013 women's rights activist and Femen-founder Alexandra Shevchenko assaulted Elmar Brok in front of the European Parliament in Brussels, after luring him outside the building with a phony interview request.

Although Femen never disclosed its source, instead mentioning "reliable informations"[31](sic), the Kyiv Post reported shortly after that circumstantial evidence points to First Deputy Prosecutor General of Ukraine Renat Kuzmin being involved.