Mukhtar Ahmad, his wife Farzana Mukhtar, and his son Danyal Ahmad (collectively, “Ahmad”) 1 petition for review of the denial by the Board of Immigration Appeals (“BIA”) of their application for asylum, withholding of removal, and relief under the Convention Against Torture (“CAT”). Because the decision of the immigration judge (“IJ”) turned primarily on an adverse credibility determination with substantial support in the record, we deny the petition for review.

Ahmad is a native and citizen of Pakistan and former active member of the Pakistan Peoples Party (“PPP”). He claims he was kidnaped and beaten severely by associates of Shabir Ahmad (“Shabir”), a member of the Jamati Islamic party, for criticizing Shabir and his political party. Since that time, Ahmad, as a professor at a public university, allegedly received threats against him and his family for his progressive political views. He came with his family to the United States on visitors’ visas that have expired. He admits removability but has timely filed for asylum.

The IJ denied Ahmad’s claims based primarily on a finding of adverse credibility. The IJ noted that Ahmad did not leave Pakistan for the United States until nearly six months after receiving a visitor’s visa, despite allegedly fearing persecution. When asked why he did not file for asylum until one day before the statutory deadline, he appeared to vacillate, saying first that he was unaware of the asylum remedy and later that he thought only political figures could apply for asylum.

The IJ also found the description of Ahmad’s difficulties vague and found unreliable the testimony of the one telephone witness he provided. Finally, the IJ concluded that even if Ahmad were credible, the harassment alleged would not rise to the level of persecution.

The BIA adopted and affirmed the IJ’s findings of fact, with the caveat that if the IJ had found Ahmad’s testimony credible, the facts alleged were sufficient to prove persecution. With this one exception, we treat the opinion of the IJ as the final agency action for purposes of this appeal. 2

We review for substantial evidence the factual basis of the IJ’s denial of Ahmad’s claims for asylum, withholding of removal, and protection under CAT. Zhang v. Gonzales, 432 F.3d 339, 343-44 (5th Cir. 2005). We will reverse the BIA only if we find that no reasonable factfinder could disagree with the result, i.e., that the evidence must compel the contrary conclusion. Chun, 40 F.3d at 78. AVhen reviewing an IJ’s credibility determination, we are particularly deferential. Id.

*478 There are two parts to a successful asylum claim. First, the alien must establish eligibility by proving that he is “unable or unwilling to return to ... [his home] country because of persecution or a well-founded fear of persecution on account of race, religion, nationality, membership in a particular social group, or political opinion.” 8 U.S.C. § 1101(a)(42)(A). A well-founded fear of persecution involves “a subjective fear of persecution, and that fear must be objectively reasonable.” Lopez-Gomez v. Ashcroft, 263 F.3d 442, 445 (5th Cir. 2001). Second, the Attorney General or his delegate, the IJ, must decide, in his sole discretion, to grant the claim. 3

The standard of proof for withholding of removal is “more stringent” than the standard for asylum claims. Mikhael, 115 F.3d at 306. The alien must prove by a “clear probability” that he will, in fact, be persecuted if returned to his home country. Id. (internal citation omitted). 4 Under CAT an alien must show it is more likely than not that he will suffer torture, as opposed to mere persecution, if removed to his home country. Efe v. Ashcroft, 293 F.3d 899, 907 (5th Cir. 2002).

The IJ’s credibility determination is supported by substantial evidence. It is not unreasonable to conclude that Ahmad, a university professor, knew of the existence of the asylum remedy well before he filed, despite his statement to the contrary; at any rate, his later equivocation called his credibility into question. 5

Ahmad argues that this credibility determination does not relate to an event central to his asylum claim and therefore cannot impeach his entire testimony. We disagree. That Ahmad waited nearly a year to file for asylum and six months after receiving a visitor’s visa to leave Pakistan for the United States, calls into question whether he has a “subjective fear of persecution” as required for asylum. Lopez-Gomez, 263 F.3d at 445.

We assume arguendo, as the BIA found, that Ahmad has alleged facts sufficient to constitute persecution. 6 But, as the BIA notes, an alien’s uncorroborated testimony must be credible before an IJ can grant asylum. 7 For the reasons mentioned above, we are not compelled to find that Ahmad testified credibly, and he presents no satisfactory corroborating evidence to carry his burden of proof. 8

*479 Because Ahmad mentions his withholding of removal and CAT claims only in his statement of the issues without developing either claim in the body of the brief, those issues are waived on appeal. 9 We note, however, that where an alien fails to meet his burden of proving eligibility for asylum, he ordinarily does not meet the stricter standards established for withholding of removal and relief under CAT. 10

The petition for review is DENIED.