The Economic Court can shutter businesses, which have the right of appeal, although the process is slow, unpredictable, and non-transparent. More profitable foreign firms are at a greater risk of expropriation, although smaller and less profitable firms are still at risk. Expropriations have occurred in several industries including food processing, mining, retail, and telecommunications. For eighteen months beginning in October 2011, the government prevented the production and distribution operations at a brewery owned by the Danish Carlsberg Group. In the same year, the government initiated the liquidation of the Amantaytau Goldfields, a joint venture involving a British firm, Oxus Gold. In September 2012, the Tashkent City Criminal Court found Uzdunrobita, a cellular-phone firm wholly owned by the Russian company MTS, guilty of financial crimes, and seized its assets. Two months later an appeals court reversed this verdict, but upheld the $600 million of fines imposed on the firm. MTS left the market, writing off all of its assets in Uzbekistan, which amounted to $1.1 billion. In 2013, the government transferred these assets to a government-owned telecom firm. In 2013, government authorities began a criminal investigation into Muzimpex Company, the local partner of the Coca-Cola Company, which held a 43 percent stake in Muzimpex. In February 2014, the government liquidated Muzimpex and took it over. The Uzbek Constitution's guarantee of press freedom is effectively non-existent in practice, with almost all media operating under government control. Journalists who criticize the regime are reported to have been subject to "physical violence, prosecution, detention and fines," often on charges of defamation. Journalists who investigate corruption are supposedly compelled to self-censor to avoid trouble. Local civil-service organizations are prohibited from monitoring or reporting on corruption. The nation's criminal code forbids "all major forms of corruption" but the "Business Anti-Corruption Portal" reports that this law is poorly enforced. High-ranking government officials are said to act with impunity. The presidential family itself is involved in several investigations internationally. Persons who report corruption are reportedly not protected from retaliation. Uzbekistan is a signatory of the United Nations Convention Against Corruption (UNCAC) and the Istanbul Action Plan, but not the OECD Convention on Combating Bribery of Foreign Public Officials in International Business Transactions. The government has been accused of neglecting any regional or local initiatives to combat seriously combat corruption. To date no international or local organizations have been granted permission to monitor or analyze corruption in Uzbekistan besides the General Prosecutor's Office, which is under the control of the Uzbek ruling regime.