Diaz Reus International Law Firm has been included in the prestigious 2025 Global Investigations Review annual guide, the GIR 100.
Clients comment:
“We engaged the firm on an investigation and, within days, the firm had gathered all the relevant details and provided a clear view of the potential impact. I was very impressed by the personal, hands-on approach – they made me feel like a top client every time we met. They took the time to understand me and my business, which made a real difference compared to other legal counsel we’ve used. Javier Coronado and Michael Diaz each brought their own expertise to the table, and I felt I had an outstanding team representing our best interests.”
“The firm has been advising on an FCPA investigation in Guyana. The level of professionalism is outstanding; they consistently share information and evaluate all possibilities before making decisions. The team is truly strong, multicultural and very difficult to defeat. Michael Diaz is the guru – his knowledge, experience and availability are impressive. He handles cases fluently in both English and Spanish, and his confidence is reassuring. He is a visionary. Javier Coronado’s experience and professionalism are also outstanding. Another bilingual English-Spanish attorney, he is always available and provides simple, effective answers. He is brilliant.”
“Diaz Reus is advising on a fraud case involving individuals from the US and UK. The team is always on top of every detail and provides guidance at every step. Michael Diaz brings a truly international perspective and a strong awareness of political and geographical dynamics, which adds real value in cross-border matters.”
The GIR comments:
Founded in 1998, Diaz Reus International Law Firm has built a distinctive global investigations platform from its base in Miami. Founding partners Michael Diaz Jr. and Robert Targ are both former prosecutors, whose government backgrounds underpin the firm’s long-standing focus on white-collar defence, anti-money-laundering, sanctions and asset-recovery matters.
In 2009, the firm created in-house affiliate DRT Investigations, Governance & Compliance, which is composed of former law-enforcement professionals who support lawyers on internal reviews and cross-border enforcement engagements.
The investigations group is headquartered in Miami and supported by partners across Washington, DC, Latin America, Europe, Africa and the Middle East. Its integration of legal advocacy with investigatory capacity, coupled with its network of 40 offices on five continents, gives it an uncommon position in the cross-border enforcement market.
Among the firm’s next generation, Javier Coronado has played a key role in complex sanctions, asset-recovery and other matters, notably contributing to the successful removal of Honduran businessmen Jaime and Yani Rosenthal from the US Treasury’s sanctions list – a multi-year process that underscored the firm’s depth in OFAC-related proceedings. Coronado’s work typifies the firm’s combination of persistence, geopolitical awareness and investigative partnership.
Coronado was named to GIR’s 40 Under 40 in 2024, while in 2025, administrative managing partner Marta Colomar-Garcia was included in GIR’s Women in Investigations special. She oversees cross-border fraud and money-laundering investigations, coordinating complex recoveries alongside US and foreign authorities. Her leadership embodies the firm’s embrace of technology-enabled investigation and commitment to building diverse, multilingual teams that can navigate enforcement matters across jurisdictions.
Other top names on the roster include Richard Wiedis, a trial attorney in Washington, DC who draws on 15 years of prosecutorial experience alongside nearly a decade spent in a business intelligence software multinational. In Latin America, Marcela Blanco, a certified anti-money laundering specialist, heads the Bogotá office, while Johan Le Grange, another former prosecutor, leads in South Africa.
The firm’s track record spans a range of sensitive, high-stakes matters, many arising from the intersection of US enforcement and Latin American politics. It has represented South American energy companies in sanctions-related disputes, including persuading a US bank that a Venezuelan client had not breached OFAC’s restrictions on the country’s oil sector. Its lawyers have also defended individuals and companies caught up in long-running US investigations into PDVSA, acting for former executives and officials in related bribery and money-laundering proceedings. Beyond Venezuela, Diaz Reus advised the owner of a Colombia-based gold company in a money-laundering case tied to alleged drug-trafficking and terrorism-financing violations, conducting an internal investigation that ultimately led US and Latin American authorities to decline prosecution. Collectively, these matters demonstrate the firm’s ability to manage politically charged enforcement cases across multiple jurisdictions and coordinate outcomes with domestic and foreign regulators.
Recent developments point to an increasingly intelligence-informed approach. The firm has broadened its investigative depth by bringing in professionals with law-enforcement and national-security experience, enhancing its capacity to trace assets and engage with government agencies. Its lawyers now employ AI and data analytics to interpret complex financial information and track cross-border asset flows more efficiently. These developments signal a pragmatic response to resource constraints at enforcement bodies and growing geopolitical sensitivity in global investigations.
Work Highlights of the Research Period
PDVSA Ad Hoc
Diaz Reus defended the opposition-appointed board of Venezuela’s state oil company in a racketeering and defamation suit brought in Florida federal court, securing a full dismissal with prejudice. The case involved politically motivated claims linked to PDVSA Ad Hoc’s role in international litigation and governance.
Yehuda Kaploun
The firm is advising US Ambassador Yehuda Kaploun in a DOJ-led initiative targeting entities alleged to support antisemitic practices, preparing civil litigation in coordination with federal agencies and international partners as part of broader enforcement efforts.
Driven Advisors and Nodus International Bank
Diaz Reus is acting for Driven Advisors and Nodus Bank in a multi-agency investigation into money laundering and bank fraud in Puerto Rico, which has led to criminal charges and asset recovery. The case is viewed as a test of regulatory enforcement against abuse of Puerto Rico’s banking framework.
