The phrase "a commitment to guarantee" is correct and usable in written English.
It can be used when discussing a promise or obligation to ensure something will happen or be provided.
Example: "The organization has made a commitment to guarantee the safety of all participants during the event."
Alternatives: "a pledge to ensure" or "a promise to secure".
Labour has made a separate commitment to guarantee GP access within 48 hours.
The authors signed a written commitment to guarantee the confidentiality of the data retrospectively collected.
SEM is designed with a minimum of semantic commitment to guarantee maximal interoperability.
The integration of electricity markets creates new challenges to the regulators in their commitment to guarantee security of supply at affordable prices.
For those in the private sector who are involved in the many aspects of education and technology, the questions asked frequently challenge both the motives for their involvement, the efforts associated with understanding the effectiveness of these efforts, and the long term commitment to guarantee sustainability.
Then there was, of course, also the mixed-bag of the Paris Agreement, which apparently sends a "market signal" that fossil fuels are on the way out, but offers absolutely no detailed commitment to guarantee this.
Reducing risk factors needs to go hand in hand with the adoption of protective factors, including better access to services (health, environment, and education) and employment opportunities, backed by political commitment to guarantee their sustainability.
President Calderón's government has an unwavering commitment to guaranteeing the rule of law and to safeguarding human rights for all.
Mr Biden could usefully make clear America's commitment to guaranteeing freedom of navigation in the region.
Reagan was prevailed upon to moderate his critique, but not before doubts had been created as to the strength of the U.S. commitment to guaranteeing with nuclear weapons the security of its allies.
