TAOYUAN, TAIWAN (REUTERS) - Taiwan vice-president William Lai left on Tuesday (Jan 25) to shore up a shaky relationship with Honduras and attend the swearing in of its new leader, an event US vice -president Kamala Harris is also going to, potentially giving the two a chance to meet.

Beijing regards Taiwan as a renegade province to be reunified, by force if necessary. It has ramped up pressure to reduce Taiwan's international footprint.

Honduras is one of only 14 countries to maintain formal diplomatic relations with Taiwan. Honduran President-elect Xiomara Castro has floated the idea of ditching Taipei for Beijing.

Speaking at Taiwan's main international airport in Taoyuan, Mr Lai said he would bring supplies to help Honduras combat the Covid-19 pandemic to demonstrate Taiwan's determination to support Castro's government from the get-go.

"As President Castro prepares to promote new policies, Taiwan will uphold the spirit of pragmatic diplomacy and mutual assistance, deepen cooperation with Honduras, and overcome various difficulties to benefit both countries' peoples," Mr Lai said.

Mr Lai, who is scheduled to meet Castro on Wednesday, added he would have "interactions and exchanges" with "leaders and deputy leaders" of allies and "friendly countries", though he did not directly mention Ms Harris.

The trip will show the world that Taipei is "a trustworthy friend and that Taiwan has the ability to help the international community", Mr Lai said.

While Washington also has no official diplomatic relations with Taipei, it is Taiwan's most important international backer and arms supplier, a frequent source of tensions between Washington and Beijing.

In the run-up to the November election, a visiting US delegation to Honduras made clear it wanted the country to maintain its Taiwan ties.

Mr Lai, as is common when Taiwanese leaders visit Latin American allies, is stopping off in the United States on his way to and back from Honduras, to which China has as usual expressed its opposition.

The United States has worried about growing Chinese influence in its backyard.

China has been stepping up efforts to win over Taiwan's remaining diplomatic allies, last month re-establishing ties with Nicaragua, and has openly said it is aiming to reduce the number to zero.