There are more than 5,000 medical and research devices in the United States containing high-activity radiation sources, including 700 with category-1 sources. Category-1 radiation material could be used by terrorists in dirty bombs. The security measures developed by the industry were written with accident prevention in mind, not in order to thwart a deliberate, forcible effort by terrorists or criminals to gain control of the toxic material. In addition, radioactive materials were considered to be “self-protecting,” because it was assumed that the powerful radiation would deter anyone thinking of tampering with these devices. Terrorist bomb-makers, however, showed themselves to be more technologically-savvy than earlier thought, and, in any event, suicide bombers would not be deterred by the risk of radiation poisoning.

Balwinder Singh, 39, who received asylum in the United States in 1997, was indicted as a member of Babbar Khalsa International (BKI) and Khalistan Zindabad Force (KZF). Both groups use bombings, kidnappings, and murders in a campaign to establish an independent Sikh state in the Punjab region of India, to be called Khalistan. U.S. District Judge Larry Hicks agreed with the prosecution and defense that the trial should be postponed from February 2014 to February 2016 so that issues related to FISA-authorized NSA surveillance of Singh could be clarified. Judge Hicks said that “the ends of justice served by this continuance outweighs the defendant’s and public’s best interests in a speedy trial.”

Western intelligence services estimate that 2,100 Europeans and seventy Americans have fought in Syria. U.S. intelligence officials report that some of these Americans have returned to the United States and are under FBI surveillance. There is a concern that individuals who have been trained by al-Qaeda affiliates will ultimately use their battlefield experience to launch attacks in the United States.

The U.S. intelligence and counterterrorism agencies have advising airlines flying to Russia to be aware of the possibility that explosive materials could be concealed in toothpaste or cosmetic tubes. DHS issued a bulletin to airlines flying into Russia alerting them to the potential threat. The new concern about explosive toothpaste tubes notwithstanding, the biggest worry is still Islamist groups based in southern Russia’s Caucasus region.

Two Austrian athletes — Alpine skier Bernadette Schild and skeleton racer Janine Flock, the current European champion— have received letters warning them to cancel their plans to compete in the Sochi Winter Games. The letters said that if they did attend the Games, they will be kidnapped. The letters are in line with threats made by Islamist militants in the Caucuses that if the Winter Games opened as scheduled on Friday, then the athletes participating in the Games, the spectators, and Russian security personnel would all be considered fair targets for attack. Similarly threatening letters were last month sent to delegations in several countries.

The numbers of Australian Islamists who have traveled to Syria to join the anti-regime rebels far exceed those of Australian Islamists who have traveled to other conflicts, including the wars in Afghanistan and Iraq. This is especially worrisome since Al-Qaeda-affiliated groups in Syria are gaining ground in their campaign to recruit foreign fighters to launch terrorist attacks when they return home. U.S intelligence has discovered training complexes in Syria for foreign fighters to learn techniques which equip them with the know-how to conduct terrorist acts when they go back to their home countries.

Last Monday, Chief U.S. District Judge Ann Aiken imposed a 5-year sentence on radical environmental activist Rebecca Rubin for her involvement in several acts of arson, including the burning of Vail Colorado’s Twin Elks Lodge which caused millions of dollars in damage. Rubin spent almost eight years living underground, giving herself up to the FBI last October. She pleaded guilty to arson, attempted arson, and conspiracy to commit arson in connection with a radical environmental group calling itself The Family. Judge Aiken also ordered Rubin to read Malcolm Gladwell’s 2013 book David and Goliath, explaining that Rubin might learn a thing or two about non-violent environmental advocacy while serving her sentence.

The U.S. Justice Department announced that the United States will seek the death penalty against Dzhokhar Tsarnaev, the 20-year-old accused of detonating two bombs the Boston Marathon last Aril, killing three people and injuring more than 200 others. The younger Tsarnaev faces thirty counts in the bombing, including use of a weapon of mass destruction resulting in death and the bombing of a public place. Since 1964, the federal government has only executed three people, including Timothy Mc­Veigh who was convicted in the 1995 Oklahoma City bombing.

Jamshid Muhtorov, a refugee from Uzbekistan now facing terrorism charges in Colorado, is the first criminal defendant who, as part of his lawyers’ defense strategy, is challenging the constitutionality of the NSA’s warrantless surveillance program. Muhtorov filed a motion Wednesday in federal court in Denver to suppress any evidence obtained through the agency’s surveillance program on grounds that it was unlawful. In July 2013 the Justice Department reversed an earlier policy, and now informs defendants whether the case against them, in whole or in part, is based on information obtained through warrantless surveillance. To date, six months after the review process at Justice was launched, Muhtorov and Mohamed Mohamud, a Portland, Oregon teenager who had been convicted after an FBI sting operation of attempting to detonate a bomb at a Christmas tree lighting ceremony, are the only defendants to receive such a disclosure.