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The recent Russia–Ukraine conflict highlights the geopolitical importance of natural gas, especially in Europe. In this light, this study examines the impact of the Russia–Ukraine conflict on the spread of price bubbles from European natural gas to international energy prices.

The Generalized Supremum Augmented Dickey-Fuller (GSADF) test is employed to detect the occurrence of price bubble episodes while the Dynamic Logit Model is used to examine price bubble contagion between the two markets. Further, a tri-variate VAR model is used to examine the determinants of the price bubble.

The findings reveal multiple bubble episodes in both European natural gas and international energy prices. Further, evidence of bilateral contagion between European natural gas and the international energy market is found. In addition, the Russia–Ukraine conflict triggers price bubble episodes in both markets. Finally, a counterfactual analysis suggests that the conflict increases the bubble contagion from the European natural gas market to the international energy market by about 40%. These findings imply that the Russia–Ukraine conflict is a significant driver of high upside risks to bubble occurrence and subsequent contagion to both European natural gas and international energy prices.

To the best of our knowledge, this study contributes new empirical evidence that the Russian–Ukrainian conflict significantly impacts the spread of price bubbles from the European natural gas market to international energy markets.

This study examines the effect of public debt on the economic growth of OECD countries by disentangling the effect into permanent and transitory components. The study covers 37 OECD countries.

The Mundlak decomposition was employed to decompose the effect of public debt into its transitory and permanent effect on economic growth. To account for potential endogeneity problem, the Hausman and Taylor estimator was employed to estimate the decomposed model. Further, the study disaggregated the OECD model into country group models for further analysis of the dynamics of the relationship between the variables.

The findings of the study reveal that in the full OECD model public debt exerts a significant negative permanent and positive transitory effect on economic growth. This was robust to alternative model specifications. The magnitude of the negative permanent effect of debt was found to be larger than the positive transitory effect. Further, the estimates of the disaggregated models reveal that though public debt has a negative permanent effect across all the country groups, it was not the case for the transitory effect of debt. Also, a net public debt model was estimated, and its effect on public debt was found to be largely insignificant, exhibiting a Ricardian-like behaviour.

To the best of our knowledge, this is the first study, particularly in the OECD context that employed the Mundlak transformation to examine the permanent versus transitory effect of public debt on economic growth.

This paper aims to examine the impact of United States (US) financial sanctions on the international dominance of the US dollar.

The survival analysis technique, which incorporates survival and hazard probabilities to determine the probability of central banks' reserve recalibration, is adopted for analysis.

The result shows that the probability of central banks recalibrating the dollar share of their official reserve currencies would increase by 60% for every ten additional financial sanctions by the United States. This could imply that more sanctions might have unintended consequences on the international reserve currency dominance of the US dollar.

To the best of the authors’ knowledge, this study may be a novel attempt to use survival analysis to examine the impact of financial sanctions on the US dollar’s international reserve currency dominance.

The purpose of this paper is to raise awareness of the role of Islamic endowments (awqaf) as viable mechanisms for financing poverty alleviation programmes and the value of the third sector in promoting public welfare.

Secondary sources provided the main data for the study. These were supplemented with personal discussions and observations. Narrative approach was used for analysis.

The lack of awareness about endowments (awqaf) is a barrier to harnessing their potentials in redressing socio‐economic inequities and enhancing the quality of life of the poor in Kano.

Scholars, merchants and civil society organizations will be awakened to the need to cooperate in employing the institution of awqaf reducing poverty through the provision of quality education, better health care and employment opportunities. Government will be made aware of the need to explore non‐conventional methods in tackling poverty, recognize Islamic endowments (awqaf) as viable alternatives in financing community welfare programmes and provide all necessary policy support –legal/institutional/financial – for their smooth operation.

The worth of this paper lies in drawing the attention of stakeholders, like policy makers, and the general public to the contemporary relevance of, and demand for, Islamic endowments (awqaf) in solving many of the socio‐economic problems excluding the poor from leading a decent life.