With the entry into force of the US-UK Defense Trade Treaty on April 13, 2012, previously published DFARS and ITAR interim rules went into effect. The aim of the treaty is to facilitate the trade of defense articles and services between US and UK militaries, security authorities and their industries by allowing the export of certain items without a license provided certain requirements are met. The DFARS rule published in May implements requirements that relate to exports that, for example, a prospective contractor may make under a Defense Department solicitation or that a contractor may make in performance of a Defense Department contract. The rule places the burden on program managers and contracting officers to determine whether contracts are eligible under the Treaty. The DDTC rule, amends the ITAR to implement the Treaty (ITAR § 126.17) and identifies the defense articles and services that cannot be exported under the Treaty (ITAR § 126 Supplement No. 1). The Federal Register notice for the DFARS rule is available at: http://www.acq.osd.mil/dpap/dars/dfars/changenotice/2012/20120522/fr_2012-D034.pdf. The Federal Register notice for the ITAR rule is available at: http://www.gpo.gov/fdsys/pkg/FR- 2012-03-21/pdf/2012-6825.pdf.